Wireless temperature measurement: The testo 915i thermometer with smartphone operation and Bluetooth is part of the popular Testo Smart Probes portfolio. The thermometer provides fast, reliable measurement results and is versatile and easy to use thanks to the fast-response probe and sprung thermocouple strip – making it ideal for carrying out your temperature measurements on flat or also uneven surfaces, e.g. of pipes.

Smart Probe for wireless temperature measurement in a wide range of applications, thanks to a large selection of probes and compatibility with standard type K thermocouple probes
Fast-response surface probe (TC type K, class 1) with sprung thermocouple strip and secure attachment via innovative locking mechanism in the handle, versatile even when it comes to non-planar surfaces, measuring range -50 to +350 °C
Easy operation, evaluation and documentation with free testo Smart App as well as automatic Bluetooth connection to smartphones, tablets or Testo measuring instruments (e.g. testo 400, testo 550s) with a range of up to 100 m
High measurement accuracy thanks to system calibration ex-works

The testo 915i wireless thermometer with fast-response air probe and sprung thermocouple strip will enable you to tackle your temperature measurements with greater speed, flexibility and ease, even when dealing with uneven surfaces. The testo 915i automatically connects to your smartphone/tablet or compatible testo measuring instrument via Bluetooth. The testo Smart App facilitates intuitive operation, clear display of measurement data as well as documentation and sending of reports on site. The handle is compatible with all standard type K thermocouple probes – making it versatile.

testo 915i - Thermometer with surface probe and smartphone operation
- Fast-response surface probe (TC type K, class 1) with sprung thermocouple strip, measuring range -50 to +350 °C
- High measuring accuracy up to ±1.0 °C thanks to system calibration ex-works
- For fast, wireless temperature measurement on flat and non-planar surfaces: The sprung thermocouple strip adapts to the surface – so you get reliable measurement results even when measuring on pipes, for example
- Innovative locking mechanism on the handle for easy, secure attachment of plug-in Testo measuring probes
- Versatile in all temperature-relevant applications: Compatible with all Testo and standard type K thermocouple probes
- testo Smart App: Display of readings, clear graphical presentation of temperature curves, create documentation on site and send as PDF or CSV files
- Automatic Bluetooth connection to smartphones, tablets or compatible Testo measuring instruments
- Bluetooth with a range of up to 100 m
- Handy, robust housing
- Thanks to its proven quality and great durability, you can rely on your Testo Smart Probe in all conditions

Technical Data: testo 915i - Thermometer with immersion/penetration probe and smartphone operation
Temperature - TC Type K (NiCr-Ni):
Measuring range: -50 to +350 °C
Accuracy: ±(1,0 °C + 1 % of mv)
Resolution: 0,1 °C
Reaction time: t??: 3 s
General technical data:
Weight: immersion/penetration probe: 22 g / Bluetooth handle: 88 g
Dimensions: Bluetooth handle: 129 x 31 x 31 mm (LxWxH)
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
Protection class: IP20
System requirements: requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Plug-in probe connection: Lockable connection to 4 standard probes testo 915i; Standard plug-in connection to other common TC probes
Length probe shaft: 136 mm
Diameter probe shaft: 5 mm
Diameter probe shaft tip: 12 mm
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth; automatic connection to testo Smart App and Testo measuring instruments
Radio range: 100 m
Storage temperature: -20 to +60 °C

Wireless vacuum measurements via just one service port: The testo 552i app-controlled vacuum probe with Bluetooth enhances the Testo Smart Probes portfolio. It delivers reliable measurement results, is robust and easy to use – the vacuum probe provides optimum support for proper evacuation of refrigeration and air conditioning systems and heat pumps.

Identify vacuum quickly and easily by means of the graphical display in the App or on the digital manifold screen
Connects automatically via Bluetooth® to the testo Smart App and digital manifolds
Exceptionally compact and reliable thanks to the robust, easy-to-handle housing with IP 54 protection class
Easy installation at any service port thanks to the integrated 45° angle

Use the testo 552i vacuum probe with Bluetooth to measure vacuum wirelessly with speed, ease and precision via just one service port – with no loss of refrigerant. The testo Smart App supports you with numerous intelligent features – for example, you can see the vacuum by simply glancing at the graphic illustration in the app or on the manifold’s display. Thanks to its robust, convenient housing and proven measuring technology, the vacuum probe is compact and reliable when carrying out your vacuum measurements on refrigeration and air conditioning systems and heat pumps.

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Evacuation: Graphic progression display of the measurement with an indication of the start and differential value

Technical Data: testo 552i - App-controlled wireless vacuum probe
General technical data:
Weight: 142 g
Dimensions: 150 x 32 x 31 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP54
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 3 AAA micro batteries
Battery life: 39 h
Connection: 7/16“ UNF
Interface: Bluetooth® 4.2
Storage temperature: -20 to +50 °C
Absolute Pressure:
Measuring range: 0 to 26,66 mbar / 0 to 20000 micron
Accuracy: ±10 micron + 10 % of mv (100 to 1000 micron)
Resolution: 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) / 100 micron (2000 to 5000 micron)
Overload: absolute: 6,0 bar / 87 psi (relative: 5,0 bar / 72 psi)

The kit for app-controlled, wireless measurements and digital documentation on your smartphone. You will get the testo 550i app-controlled digital manifold with Bluetooth, 2-way valve block and sturdy hook, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. For other wireless measurements, the optional Testo Smart Probes for temperature, humidity and vacuum are the perfect addition. You’ll be ideally equipped to carry out your measuring tasks on refrigeration and air conditioning systems and also heat pumps.

- All activities, from measurement through to documentation, using the App on your Smartphone
- The smallest digital manifold on the market
- Maximum reliability and excellent flexibility: extremely robust housing with protection class IP54, optionally expandable with the wireless testo Smart Probes for temperature, humidity and vacuum

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All the results can be read simultaneously on one display (in conjunction with the appropriate Testo Smart Probes)
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the testo Smart App and the appropriate Testo Smart Probes, e.g. testo 115i and testo 605i)
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 550i - App-controlled digital manifold with Bluetooth and 2-way valve block
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0,5 % fs
Resolution: 0,01 bar
Probe connection: 3 x 7/16" – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 595 g
Dimensions: 77 x 109 x 63 mm
Operating temperature: -10 to +50 °C
Protection class: IP54
System requirements: requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Product colour: Black
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 3 AAA micro batteries
Battery life: 130 h
Data transfer: Bluetooth®
Radio range: 150 m
Refrigerants in instrument: R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: testo 115i - Clamp thermometer operated via smartphone
Temperature - NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1,3 °C (-20 to +85 °C)
Resolution: 0,1 °C
General technical data:
Weight: 127.4 g
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth®
Radio range: 100 m
Storage temperature: -20 to +60 °C

The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. Additional Bluetooth probes, e.g. for wireless, hose-free vacuum measurements with the testo 552i, are available separately.

- All results at a glance thanks to the large graphic display
- Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
- Easy, wireless, flexible measurements and documentation: Temperature and vacuum measurements via automatic Bluetooth® connection, testo Smart App for documentation and lots more

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the appropriate measuring instrument, e.g. Testo Smart Probe)
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 550s - Smart digital manifold with Bluetooth and 2-way valve block
Temperature:
Measuring range: -50 to +150 °C
Accuracy: ±0,5 °C
Resolution: 0,1 °C
Probe connection: 2 x Plug-in (NTC)
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0,5 % fs
Resolution: 0,01 bar
Probe connection: 3 x 7/16" – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 826 g
Dimensions: 210 x 121 x 60 mm (LxWxH)
Operating temperature: -20 to +50 °C
Protection class: IP54
Product colour: Black
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 4 x type AA batteries
Battery life: 250 h with no illumination, no Bluetooth®h; 100 h with illumination and Bluetooth®
Radio range: 150 m
Refrigerants in instrument: R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
System requirements: requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: testo 115i - Clamp thermometer operated via smartphone
Temperature - NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1,3 °C (-20 to +85 °C)
Resolution: 0,1 °C
General technical data:
Weight: 127.4 g
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth®
Radio range: 100 m
Storage temperature: -20 to +60 °C

Capacitive oil sensor from Testo, together with its needs-based design, make it possible to take measurements in hot oil (user is protected from the heat of the deep fat fryer).

IP 65: protected against water jets without a protective cover.

Clear, visual alarm indication via highly-visible alarm backlight in traffic light colours.

Washable case for hygienically stowing away at the application site.

A visual or odor check is not sufficient to verify whether the quality of the cooking oil is still good. Chain restaurateurs with the testo 270 cooking oil tester only need to change the cooking oil once critical TPM values are reached. This saves them from changing the cooking oil more frequently than is necessary, enabling them to also benefit from the associated cost savings.

Product Description:
Change cooking oil at the right time and save money: the testo 270 enables you to work more reliably, intuitively and efficiently. You will find this cooking oil tester to be a competent assistant, helping you achieve impeccable quality assurance when it comes to your frying processes. Easy cooking oil monitoring using the testo 270 will enable you to comply with critical TPM values and to change the oil at just the right time.

With the testo 270, you can take measurements directly in hot oil in a variety of deep fat fryers without any waiting time. The cooking oil tester offers numerous advantages, such as a removable, dishwasher-safe case, an unbreakable oil sensor, easy 3-button operation, and lots more.

Robust, simple and convenient for the kitchen:
With its reliable measuring technology, the testo 270 cooking oil tester is your competent partner when it comes to ensuring quality assurance for your deep fat fryer, whether you are using the instrument in your restaurant business, commercial kitchen, in catering, food inspection, or in the quality assurance or production of food.

At the same time, the cooking oil tester is easy to use: you can set the required TPM limit values in advance and protect them from being modified inadvertently with a PIN. The cooking oil tester's display helps you during the measurement itself: it flashes until a stable reading is reached. The display signalling function in traffic light colors (red, yellow and green) enables quick identification of the measurement result range. Naturally, the accurate reading in %TPM can also be read off on the display.

All the advantages of the testo 270 cooking oil tester at a glance
- Simple: self-explanatory operation with 3-level alarm backlight. Testo's capacitive oil sensor makes it possible to carry out back-to-back measurements in hot fat, even without needing to wait for the cooking oil tester to cool down
- Accurate: calibration possible at the measuring location using the reference oil.
- Robust: the fiberglass housing is extremely impact-resistant. Moreover, the oil sensor is embedded in a metal casing and is therefore unbreakable. In accordance with protection class IP65, it is protected against water jets and can be washed under running water
- Reliable: users are protected from the heat of the cooking oil thanks to the measuring instrument's ergonomic design
- Clear: %TPM shown on the large display, along with unambiguous signaling function of the display illumination in traffic light colors (red, yellow and green); Hold and Auto-Hold function for the reading display

Temperature - PTC:
- Measuring range: +40 to +200 °C
- Accuracy: ±1,5 °C
- Resolution: 0,1 °C

TPM - Capacitive:
Measuring range: 0,0 to 40,0 % TPM
Accuracy: ±2 % TPM (+40 to +190 °C) *typically, based on Testo in-house reference, at an ambient temperature of 25 °C
Resolution: 0,5 % TPM (+40 to +190 °C)

General technical data:
- Operating humidity: 0 to +90 %RH
- Weight: 255 g
- Reaction time: Approx. 30 s
- Dimensions: 170 x 50 x 300 mm ((LxWxH))
- Operating temperature: 0 to +50 °C
- Product-/housing material: TPE/PC + ABS/PC + ABS + 10% GF
- Protection class: IP65
- Product color: white
- Authorizations: CE 2014/30/EU
- Length probe shaft: 175 mm
- Length probe shaft tip: 35 mm
- Diameter probe shaft: 11 mm
- Diameter probe shaft tip: 10 mm
- Alarm features: Upper and lower TPM limit value freely adjustable, visual alarm via 3-colour display backlighting (green, orange, red), values and illumination flash in the display until the measurement is ended (Auto Hold)
- Battery type: 2 batteries type micro AAA 1.5 V (LR03)
- Battery life: at 20 °C approx. 25 h continuous operation (corresponds to approx. 500 measurements ), without display -lighting
- Display type: LCD (Liquid Crystal Display)
- Display size: 2 lines
- Display lighting: backlight
- Storage temperature: -20 to +70 °C
- Application temperature: +40 to +200 °C

- Automatic and precise refrigerant charging according to target superheat, subcooling and weight thanks to intelligent valve
- Wireless connection and operation with Testo manifolds and testo Smart App via Bluetooth
- All measured values for the charging process at a glance with storage of the measured data in the testo Smart App
- Particularly handy thanks to compact housing, low weight, practical carrying handle and a robust plastic bag

Product Description
Charge refrigeration systems and heat pumps faster and more precisely: automatically with the testo 560i wireless refrigerant scale, the intelligent refrigerant valve, a digital manifold from Testo and/or the testo Smart App. Simply enter the charging program, target value for superheating, subcooling or weight in the manifold or App and the scale and valve will do the rest for you. Your benefits: Time saving and precise charging of the system.

testo 560i kit for automatic charging of refrigeration systems and heat pumps
- In the kit: digital refrigerant scale testo 560i and intelligent valve (both with Bluetooth), shoulder bag, batteries
- Automatic and precise refrigerant charging with the aid of refrigerant scale, intelligent valve as well as Testo manifold and/or testo Smart App
- Easy operation via Testo manifold or testo Smart App with automatic charging programs according to target value superheat, subcooling or refrigerant weight
- Flexible in confined environments: Scale and valve automatically connect via Bluetooth to the manifold and App on your smartphone/tablet
- All measured values for the charging process at a glance in the manifold and App with storage of the measured data in the App
- Compatible with the manifolds testo 557s/550s/550i as well as testo 557 /550, Smart Probes testo 115i/ 549i/605i, testo Smart App for Android and iOS

Advantages of the testo 560i refrigerant scale
- High measurement accuracy with resolution 10 g and output in kg
- Maximum load of 100 kg for all common refrigerant containers
- High Bluetooth range of up to 150 m together with a Testo manifold (alone up to 30 m)
- Safe handling: 3D corners for accurate positioning of the refrigerant container and textured rubber surface for stable grip
- High robustness due to dust and splash water protection (IP44)
- Especially handy thanks to compact housing, low weight, practical carrying handle and sturdy shoulder bag
- Long battery life of up to 70 hours thanks to replaceable AA batteries and auto power-off function
- High flexibility in outdoor use at temperatures from -10 to 50° C

Advantages of the refrigerant valve
- Especially robust thanks to IP54
- The valve can work up to 35 bar
- High Bluetooth range of up to 150 m together with a Testo manifold (alone up to 50 m)
- Long battery life of over 60 hours and replaceable 9 V block battery
- Very practical due to sturdy hook

Technical Data

testo 560i - Digital refrigerant scale with Bluetooth® - General technical data:
Operating humidity: 0 to 80 %RH
Weight: 4,36 kg (incl. batteries and bag)
Measuring range: 0 to 100 kg
Accuracy: Operating temperature +22 °C:
≤ ±(10 g+ 0,03 %rdg) (0 to 30 kg)
≤ ±(10 g+ 0,05 %rdg) (30 to 100 kg)
Resolution: 0,01 kg
Dimensions: 310 x 287 x 58 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP44
Battery type: 4 x type AA batteries
Battery life: > 70 h at +25 °C
Interface: Bluetooth® 4.2
Radio range: 30 m
Storage temperature: -10 to +50 °C

Refrigerant valve with Bluetooth - for digital refrigerant scale testo 560i - General technical data:
Operating humidity: 0 to 80 %RH
Weight: 570 g (incl. batteries)
Dimensions: 95 x 119 x 47 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP54
Product colour: black/orange; silver
Maximum working pressure: 35 bar
Battery type: 9 V (6LR61)
Battery life: >60 hrs + 3000 valve operations
Interface: Bluetooth® 4.2
Radio range: 50 m
Storage temperature: -10 to +50 °C

Highest image quality: IR resolution of 320 x 240 pixels, via integrated testo SuperResolution Technology 640 x 480 pixels
Precise measurement: thermal sensitivity of 0.06°C
Smart and wireless: use your mobile device with the free testo Thermography App and wirelessly transmit readings from the testo 770-3 clamp meter and the testo 605i humidity measuring instrument (both available separately)
Innovative functions, such as testo ScaleAssist and testo ɛ-Assist for comparable, error-free thermal images

The testo 872 thermal imager gives you the best possible support for your work in professional industrial and building thermography. Take thermal images quickly, reliably and smartly with the highest image quality, very good thermal sensitivity and innovative functions. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.

Product Description:
The testo 872 thermal imager is ideally suited for professional industrial and building thermography at the same time it ensures your work is both quick and easy. It is versatile to use, for example in industrial and mechanical maintenance or for detecting structural defects. You can generate error-free and objectively comparable infrared images using its handy functions. The IFOV warner, testo ɛ-Assist and testo ScaleAssist mean you can avoid measurement errors and not only effortlessly achieve optimum setting of emissivity (ɛ) and reflected temperature (RTC) for building thermography, but also of thermal image scale.

The testo 872 thermal imager– smart and networked
The testo 872 thermal imager guarantees wireless communication with mobile terminal devices via WLAN. The testo Thermography App for iOS and Android offers you the possibility of writing and sending reports on site, as well as saving them online, and of using your smartphone or tablet as a second display or for remote control.
The testo 872 delivers even more informative thermal images in combination with the compatible 770-3 clamp meter and testo 605i thermohygrometer. Both are available separately – simply order them straight away along with your testo 872. The thermal imager wirelessly integrates the measurement results of these measuring instruments via Bluetooth. The additional output, current and voltage values of the testo 770-3 clamp meter enable better interpretation of measured temperatures. Measure the air temperature and humidity with the testo 605i humidity measuring instrument and easily detect locations at risk of developing mould using the special humidity palette in the thermal imager via the traffic light principle.

Areas of application of the testo 872 thermal imager
Detect locations at risk of developing mould, pinpoint thermal bridges, discover structural defects or identify overheated connections. The testo 872 thermal imager is ideal for applications in daily maintenance and installation work in trade and industry. Quick, simple and reliable for maintenance and detection of defects.

Technical highlights of the testo 872 thermal imager
The testo 872 thermal imager is characterized by its easy handling and its outstanding image quality. Its technical features are impressive:

Highest image quality thanks to high resolution: 76,800 temperature measuring points for precise thermography. Infrared resolution of 320 x 240 pixels – extendible to 640 x 480 pixels via integrated SuperResolution Technology
Detecting temperature differences from as little as 0.06°C
testo Thermography App to use mobile terminal devices as a second display and for remote control or to write and send reports, along with saving them online
Wireless communication thanks to Bluetooth – this means you can also wirelessly integrate the readings of the compatible testo 770-3 clamp meter and testo 605i thermohygrometer
Built-in digital camera and laser marker generate a real image in parallel to the thermal image
Critical temperature conditions are directly displayed via automatic hot-cold spot recognition
The testo ScaleAssist automatically ensures optimum setting of the thermal image scale, which means you generate objectively comparable and error-free thermal images, for example of the thermal insulation behaviour of buildings
The testo ɛ-Assist ensures the correct measurement result by automatically determining and setting the emissivity and reflected temperature
The IFOV warner means the distance from the measurement object / measurement spot size is determined and the measurement spot is shown on the thermal image – you therefore avoid measurement errors because the camera shows you exactly what you can measure
Pro software for image evaluation on the PC
You can choose to save thermal images as JPEGs

Technical data:
Infrared image output:
Focus: Fixed focus
Infrared resolution: 320 x 240 pixel
Image refresh rate: 9 Hz
SuperResolution (IFOV): 1.3 mrad
SuperResolution (Pixel): 640 x 480 pixels
Geometric resolution (IFOV): 2.3 mrad
Minimum focus distance: <0.5 m
Field of view: 42° x 30°
Thermal sensitivity: 60 mK
Spectral range: 7.5 to 14 µm

Image output visual:
Minimum focus distance: 0.5 m
Image size: at least 3.1 MP

Image presentation:
Display option: IR image / real image
Colours: 10 (iron, rainbow, rainbow HC, cold-hot, blue-red, grey, inverted grey, sepia, Testo, iron HT)
Display type: 8.9 cm (3.5") TFT, QVGA (320 x 240 pixels)
Digital zoom: 2x; 4x

Measurement:
Reflected temperature: manual
testo ε-Assist: Included
Measuring range: -30 to +100°C; 0 to +650°C
Accuracy: ±2 °C, ±2 % of m.v.
Emissivity: 0.01 to 1

Measuring function:
Solar mode – manual: Input of solar radiation value
Analysis function: Mean point measurement, hot/cold-spot recognition, Delta T, area measurement (min-max on area)
Humidity measurement with humidity measuring instrument: Automatic measurement value transfer of thermohygrometer testo 605i via Bluetooth (instrument must be ordered separately); Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey
testo ScaleAssist: Included
Humidity mode manual: Included
IFOV warner: Included
Electrical mode manual: Input of current, voltage or power
Electrical measurement with clamp meter: Automatic measurement value transfer of clamp meter testo 770-3 via Bluetooth (instrument must be ordedered separately); Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey

Imager equipment:
Digital camera: Included
Full screen mode: Included
JPEG storage: Included
Video streaming: via wireless LAN with testo Thermography App
Laser: Laser marker
Standard lens: 42° x 30°
Interface: USB 2.0 Micro B
WLAN Connectivity: Communication with the testo Thermography App wireless module BT/WLAN (EU, EFTA, USA, AUS, CDN, TR)
Bluetooth: Measurement value transfer from thermohygrometer testo 605i, clamp meter testo 770-3 (optional); Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey

Imager storage:
File format image: .bmt; .jpg; export option in .bmp; .jpg; .png; .csv; .xls
Storage device: Internal Memory (2.8 GB)

Power supply:
Battery type: Fast-charging, Li-ion battery can be changed on-site
Operating time: 4 h
Charging options: In instrument / charger (optional)
Mains operation: yes

Ambient Condition:
Housing protection class: IP54
Vibration: 2G
Air humidity: 20 to 80 %RH non-condensing
Storage temperature: -30 to +60 °C
Operating temperature: -15 to +50 °C

Physical specification:
Housing: PC ABS
Weight: 510 g
Dimensions: 219 x 96 x 95 mm

PC software:
System requirements: Windows 10; Windows 8; Windows 7

Standards, tests, warranty:
EU-/EG-guidelines: RED: 2014/53/EU; EMC: 2014/30/EU

Volume flow hood for larger swirl outlets for measuring volume flow, temperature and relative humidity
Impressively light with a weight of 2.9 kg
Precise measurement even at swirl outlets thanks to integrated volume flow straightener
Fast set-up, convenient operation and protocol creation on site using the App

Make sure you get the testo 420 volume flow hood for larger ceiling outlets and at the same time enjoy multiple maintenance benefits on HVAC systems. Because the flow hood with the removable measuring instrument is not only exceptionally light, it also guarantees accurate volume flow calculations at swirl outlets.

Product Description:
The testo 420 volume flow hood for larger air inlets and outlets enables fast and precise compliance with hygiene guidelines and requirements concerning room air quality. It provides reliable support with the calculation of the overall volume flow on HVAC systems, for instance in hospitals, office buildings or commercial buildings.

High measuring accuracy at swirl outlets thanks to volume flow straightener
Volume flow is frequently measured at swirl outlets. Air flows are often incorrectly measured due to the turbulent air at these outlets.
The testo 420 volume flow hood means you can significantly reduce these measurement errors. The integrated volume flow straightener calms the turbulence and converts it into a virtually uniform air flow. This enables accurate calculation of volume flow in the 80 to 3,500 m3/h range.

Exceptionally light volume flow hood with fast set-up
The volume flow hood with ergonomic handles and tiltable display has an exceptional weight of less than 2.9 kg. This means that frequent volume flow calculations in large rooms and measurements above head height can also be carried out reliably and comfortably. In the process, a large measuring button on the volume flow hood ensures easy recording of the readings.
The dimensions of the hood are 610 x 610 mm. We offer additional hoods as accessories for further ceiling outlets. The use of our optional tripod arm is a great help for air inlets and outlets which are located very high up. It can be extended up to 4 metres.
The volume flow hood is quick and easy to set up thanks to tension rods. The trolley which is included in the scope of delivery ensures safe transport.

Create protocols directly on site and mail them using the App connection
Take advantage of further practical functions and download our free App. Because the App connection enables mobile devices such as smartphones and tablets to be used as a secondary display and remote control via Bluetooth. This is particularly practical for using a tripod arm for high ceilings.
The App enables live measurement on HVAC systems using a start and stop function and the saving of measurement data in txt format. You can create the measurement protocol directly on site using the App. Measurement results, such as the overall volume flow and the air exchange rate, can be directly assigned to customer-specific protocol templates. You can then send your readings and protocols via the e-mail function. This means you save a considerable amount of time and increase efficiency.

Volume flow hood with removable measuring instrument performance overview
The volume flow hood for HVAC systems is equipped with a measuring instrument for displaying measurement data. The device can be tilted and removed for user-friendly reading of measuring values.
The testo 420 measuring instrument enables you to measure flow velocity, volume flow, absolute pressure, temperature and relative humidity. The automatic zeroing ensures higher accuracy for low pressures.
All measuring values are easy to read on the large display which has an illumination function. For analyses and documentation, measurement data can be saved and measurement protocols created directly on site using the App connection. Administration of the measurement data is very easy on the PC without any additional software via the plug & play function.
The testo 420 volume flow hood with its integrated measuring instrument was not just developed for volume flow measurement at larger ceiling outlets. The measuring instrument can also be taken off the hood and used for pressure, flow and volume flow measurements in the duct. This means you can save on the purchase of an additional measuring instrument.
You merely have to attach a Pitot tube and connection hoses (both optional) for measurements in ducts. Timed and multi-point mean calculation, as well as the combination of the two, together with simple input of the duct geometry provide you with support for measurements in ducts.

Technical data:
Temperature NTC:
Measuring range: -20 to +70 °C
Accuracy: ±0.5 °C (0 to +70 °C)
±0.8 °C (-20 to +0 °C)
Resolution: 0.1 °C
Reaction time: 45 s (t90)

Humidity Capacitive:
Measuring range: 0 to 100 %RH
Accuracy: ±1.8 %RH + 3 % of mv at +25 °C
(5 to 80 %RH)
Resolution: 0.1 %RH

Differential Pressure Piezoresistive:
Measuring range: -120 to +120 Pa
Accuracy: ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa
Resolution: 0.001 Pa
Reaction time: 1 s (t90)

Absolute Pressure:
Measuring range: 700 to 1100 hPa
Accuracy: ±3 hPa
Resolution: 0.1 hPa
Reaction time: 1 s

Volume flow:
Measuring range: 40 to 4000 m³/h
Accuracy: ±3 % of mv + 12 m³/h at +22 °C
1013 hPa (85 to 3500 m³/h)
Reaction time: 1 s (t90)
Resolution: 1 m³/h

General technical data:
Dimensions: 610 x 610 mm (Standard hood)
Operating temperature: -5 to +50 °C
EU-/EG-guidelines: EU-guideline 2014/30/EU
Battery type: Alkali manganese, mignon, type AA
Battery life: 40 h
Display size: 3.5"
Display function: Dot matrix
Display ligthing: with illumination
Interface: Micro-USB; Bluetooth® 4.0 wireless technology
Memory: 2 GB (internal)
Storage temperature: -20 to +60 °C
Weight: 2900 g

The testo 815 sound level meter can be used for control measurements in the air conditioning and heating area, on combustion systems or at workplaces. It can also enable quick and precise assessment of machinery and discotheque noise.

Frequency evaluation according to characteristic curves A and C
Easy to adjust (adjustment screwdriver included in the scope of delivery)
Min./max. memory
Integrated tripod knuckle screw (1/4 inch)

Determine the noise level quickly, easily and reliably in your day-to-day work: with the testo 815 sound level meter.

Applications of the testo 815 sound level meter
- Heating technology: measurement of the volume of burners
- Industry and trade: measurement of machinery noise
- Event technology or public authorities: noise levels at events
- Building services: simple measurements by the caretaker when there are complaints

General technical data:
Weight: 195 g
Dimensions: 255 x 55 x 43 mm
Operating temperature: 0 to +40 °C
Product-/housing material: ABS
Frequency weighting: A/C
Section measuring range: 30 - 80 dB; 50 - 100 dB; 80 - 130 dB
Time weighting: FAST 125 ms setting / SLOW 1 s setting
Pressure dependency: -0,002 dB/hPa
Battery type: 9V block battery, 6F22
Battery life: 70 h
Storage temperature: -10 to +60 °C
Sound Pressure:
Measuring range: +32 to +130 dB
Frequence range: 31,5 Hz to 8 kHz
Accuracy: ±1,0 dB
Resolution: 0,1 dB
Measuring rate: 5 s

The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. Additional Bluetooth probes, e.g. for wireless, hose-free vacuum measurements with the testo 552i, are available separately.

- All results at a glance thanks to the large graphic display
- Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
- Easy, wireless, flexible measurements and documentation: Temperature and vacuum measurements via automatic Bluetooth® connection, testo Smart App for documentation and lots more

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the appropriate measuring instrument, e.g. Testo Smart Probe)
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 550s - Smart digital manifold with Bluetooth and 2-way valve block
Temperature:
Measuring range: -50 to +150 °C
Accuracy: ±0,5 °C
Resolution: 0,1 °C
Probe connection: 2 x Plug-in (NTC)
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0,5 % fs
Resolution: 0,01 bar
Probe connection: 3 x 7/16" – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 826 g
Dimensions: 210 x 121 x 60 mm (LxWxH)
Operating temperature: -20 to +50 °C
Protection class: IP54
Product colour: Black
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 4 x type AA batteries
Battery life: 250 h with no illumination, no Bluetooth®h; 100 h with illumination and Bluetooth®
Radio range: 150 m
Refrigerants in instrument: R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
System requirements: requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: testo 115i - Clamp thermometer operated via smartphone
Temperature - NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1,3 °C (-20 to +85 °C)
Resolution: 0,1 °C
General technical data:
Weight: 127.4 g
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth®
Radio range: 100 m
Storage temperature: -20 to +60 °C

With this kit, you’ll be ready to start your measurements in the commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps straight away: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two fixed cable clamp temperature probes (NTC) and a robust transport case. Additional Bluetooth probes, e.g. for wireless measurements of temperature and vacuum, are available separately.

- All results at a glance thanks to the large graphic display
- Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
- Easy, wireless, flexible measurements and documentation: Temperature and vacuum measurements via automatic Bluetooth® connection, testo Smart App for documentation and lots more

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the appropriate measuring instrument, e.g. Testo Smart Probe)
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 550s - Smart digital manifold with Bluetooth and 2-way valve block
Temperature:
Measuring range: -50 to +150 °C
Accuracy: ±0,5 °C
Resolution: 0,1 °C
Probe connection: 2 x Plug-in (NTC)
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0,5 % fs
Resolution: 0,01 bar
Probe connection: 3 x 7/16" – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 826 g
Dimensions: 210 x 121 x 60 mm (LxWxH)
Operating temperature: -20 to +50 °C
Protection class: IP54
Product colour: Black
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 4 x type AA batteries
Battery life: 250 h with no illumination, no Bluetooth®h; 100 h with illumination and Bluetooth®
Radio range: 150 m
Refrigerants in instrument: R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
System requirements: requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: Clamp temperature probe kit (fixed cable, NTC) - For measurements on pipes (Ø 6-35 mm)
Temperature - NTC:
Measuring range: -40 to +125 °C
Accuracy: ±1 °C (-20 to +85 °C)
General technical data:
Weight: 81 g
Dimensions: 120 x 77 x 32 mm
Product colour: Black

Easy parametrization of the outlet/duct cross-section for measuring the volume flow
List of multiple volume flows and calculation of the total volume flow (in the log)
Identification of mould risk thanks to the combined utilization of testo 605i and testo 805i
Rapid image documentation with IR temperature readings and measuring spot marking

With the Testo Smart Probes VAC set, you can check air velocities, humidity, volume flows and temperatures in, on and around air conditioning systems. The robust testo Smart Case enables the measuring instruments to be conveniently transported and ensures that they are always to hand when needed.

Product Description:
The compact testo Smart Probes VAC set includes four measuring instruments that can be used with your smartphone/tablet for key measuring tasks carried out by VAC engineers: the testo 405i thermal anemometer. the testo 410i vane anemometer, the testo 605i thermohygrometer and the testo 805i infrared thermometer.

Advantages of the testo Smart Probes VAC set
The measuring instruments in the testo Smart Probes VAC set can be connected quickly and easily to your smartphone or tablet via Bluetooth. You can therefore measure air velocities, humidity, volume flows and temperatures with intuitive ease using the testo Smart Probes App. The measuring instruments are easy to transport in the handy testo Smart Case and always to hand when needed.

Advantages and applications of the individual measuring instruments:

testo 405i: thermal anemometer with smartphone operation
Measurement of air velocity, volume flow and temperature
Simple configuration of the dimension and geometry of the duct cross-section for measuring the volume flow
Telescopic tube which can be extended to 400 mm

testo 410i: vane anemometer with smartphone operation
Measurement of air velocity, volume flow and temperature
Display of the volume flow of multiple outlets in order to adjust systems
Easy parametrization of the outlet (dimension and geometry)

testo 605i: Thermohygrometer with smartphone operation
Measurement of air humidity and temperature in rooms and ducts
Automatic calculation of the dew point and wet-bulb temperature

testo 805i: infrared thermometer with smartphone operation
Non-contact infrared measurement of surface temperature
Measuring spot marking via highly visible 8-point laser circle
Easy selection of emission level via stored materials list
Image documentation with readings and measuring spot marking

Practical App with special functions for measurement data analysis on your smartphone or tablet
Measurement data is transmitted wirelessly from the relevant measuring instrument to the testo Smart Probes App and can be viewed conveniently on mobile terminal devices – either as a chart or in table form. The App also offers practical functions such as timed and multi-point mean calculation, volume flow configuration, comparison of several volume flows at various outlets, automatic calculation of the dew point and wet-bulb temperature and identification of areas susceptible to mould via a clear traffic light system. The measurement data log can be emailed directly as a PDF or Excel file. This saves you time, allowing you to further increase your efficiency.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature NTC:
Measuring range: -20 to +60 °C (testo 405i + testo 410i + testo 605i)
Accuracy: ±0.5 °C (testo 405i + testo 410i)
±0.8 °C (-20 to 0 °C) (testo 605i)
±0.5 °C (0 to +60 °C) (testo 605i)
Resolution: 0.1 °C (testo 405i + testo 410i + testo 605i)

Temperature Infrared:
Measuring range: -30 to +250 °C
Accuracy: ±1.5 °C or ±1.5 % of mv (0 to +250 °C)
±2 °C (-20 to -0.1 °C)
±2.5 °C (-30 to -20.1 °C)
Resolution: 0.1 °C

Humidity Capacitive:
Measuring range: 0 to 100 %RH
Accuracy: 5 to 80 %RH: ±(1.8 %RH + 3 % of mv) at +25 °C
Resolution: 0.1 %RH

Velocity Hot wire:
Measuring range: 0 to 30 m/s
Accuracy: ±(0.1 m/s + 5 % of mv) (0 to 2 m/s)
±(0.3 m/s + 5 % of mv) (2 to 15 m/s)
Resolution: 0.01 m/s

General technical data:
Dimensions: 200 x 30 x 41 mm (testo 405i)
140 x 36 x 25 mm (testo 805i)
154 x 43 x 21 mm (testo 410i)
243 x 30 x 24 mm (testo 605i)
Operating temperature: -20 to +50 °C (testo 405i + testo 410i + testo 605i)
-10 to +50 °C (testo 805i)
System requirements: requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 micro batteries AAA (per Smart Probe)
Battery life: 15 h (testo 405i), 130 h (testo 410i), 150 h (testo 605i), 30 h (testo 805i)
Storage temperature: -20 to +60 °C
Diameter vane: 40 mm (testo 410i)

For measuring volume flow, air velocity and temperature
Simple configuration of the dimension and geometry of the duct cross-section for determining the volume flow
Convenient for working in ventilation ducts thanks to its telescopic tube, which can be extended up to 400 mm
Really convenient to operate thanks to the testo Smart Probes App (e.g. easy viewing of readings, measurement data trend, log function)

With the testo 405i hot wire anemometer, you can measure air velocities, temperatures and volume flows. Via Bluetooth, the readings are transmitted wirelessly straight to the testo Smart Probes App on your smartphone or tablet. You can view the values conveniently and use numerous intelligent features.

Product Description:
No more surprises: the testo 405i thermal anemometer with smartphone operation from the Testo Smart Probes series is ideal for carrying out measuring tasks in ventilation ducts. It is easy to use the anemometer to determine air velocity, temperature and volume flows. The testo 405i is also suitable for measuring indoor air velocity. Practical when, for example, you want to locate non-airtight windows. Cooling capacities and heating outputs can also be calculated when used in conjunction with the testo 605i thermohygrometer.

Operation independent of measuring location via your smartphone
The testo 405i hot wire anemometer combines professional Testo measuring technology with App-based operation. This means you benefit from numerous additional functions in your day-to-day work. With the testo Smart Probes App, you can view readings conveniently on your smartphone or tablet. You no longer have to spend ages trying to make out the display at poorly accessible points. Volume flow can also be measured easily using the App: following intuitive input of the duct cross-section, the App calculates this completely automatically.

The App opens up other practical options too: it not only displays measurement data, but also evaluates and documents it. It is easy to carry out a timed and multi-point mean calculation with the App. It also displays the measurement data curve at the press of a button. And sends the measurement data logs as PDF or Excel files.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature NTC:
Measuring range: -20 to +60 °C
Accuracy: ±0.5 °C
Resolution: 0.1 °C

Velocity Hot wire:
Measuring range: 0 to 30 m/s
Accuracy: ±(0.1 m/s + 5 % of mv) (0 to 2 m/s)
±(0.3 m/s + 5 % of mv) (2 to 15 m/s)
Resolution: 0.01 m/s

General technical data:
Dimensions: 200 x 30 x 41 mm: Operating temperature: -20 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 15 h
Length probe shaft: 400 mm
Storage temperature: -20 to +60 °C

Automatic calculation of the dew point and wet-bulb temperature
Measurement data analyzed and sent via testo Smart Probes App
Clear identification of areas susceptible to mould via traffic light principle

The compact testo 605i temperature and humidity measuring instrument features professional measuring technology in an intelligent format: it can be used in conjunction with a smartphone/tablet and the testo Smart Probes App to reliably measure air temperature and humidity in rooms and ducts.

Product Description:
In addition to measuring air temperature and relative humidity in rooms and ducts, the thermohygrometer is also suitable for checking air conditioning system humidifiers. When you use the testo 605i in conjunction with the testo 805i infrared thermometer, you can clearly identify areas susceptible to mould via the traffic light principle, with the assistance of a measurement menu that is already stored in the App.

Measure more efficiently using the App
The testo 605i wirelessly transmits the measurement data via Bluetooth to your own smartphone or tablet. With the testo Smart Probes App installed on your terminal device, you can view your readings conveniently. The App also enables the dew point and wet-bulb temperature to be determined automatically. All measurement data is displayed either as a chart or in table form. The measurement data log can then be emailed directly as a PDF or Excel file.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature NTC:
Measuring range: -20 to +60 °C
Accuracy: ±0.8 °C (-20 to 0 °C)
±0.5 °C (0 to +60 °C)
Resolution: 0.1 °C

Humidity Capacitive:
Measuring range: 0 to 100 %RH
Accuracy: 5 to 80 %RH: ±(1.8 %RH + 3 % of mv) at +25 °C
Resolution: 0.1 %RH
General technical data:
Dimensions: 243 x 30 x 24 mm
Operating temperature: -20 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 150 h
Length probe shaft: 100 mm
Storage temperature: -20 to +60 °C

Measurement of air velocity, volume flow and temperature
Display of the volume flow of multiple outlets in order to adjust systems
Easy parametrization of the outlet (dimension and geometry)
Convenient viewing of readings on a smartphone/tablet with the testo Smart Probes App

Professional measuring technology in a small format: the compact testo 410i vane anemometer with smartphone operation measures the volume flow, air velocity and temperature at air outlets quickly and reliably. The testo Smart Probes App enables readings to be viewed conveniently and offers intelligent additional functions.

Product Description:
It fits perfectly into any shirt pocket: the testo 410i vane anemometer is ideal for measuring air velocity and temperature at air outlets and ventilation grilles. Even measuring and adjusting the volume flow is easy. The testo 410i gives you huge flexibility, so you can adapt to any unplanned measuring requirements in your everyday work.
Measuring convenience thanks to the App
The testo 410i combines professional Testo measuring technology with the efficient functions of an App. Your smartphone or tablet is used as a convenient display for your measuring values on site. You can view all measurement data via the testo Smart Probes App, and email the log immediately as a PDF or Excel file.

Configuration of the volume flow measurement is really easy with the App, partly due to the fact that you can carry out parametrization of the outlet (dimension, geometry) intuitively. Particularly useful: when adjusting a ventilation system, volume flows of multiple outlets can be cross-checked and compared. Timed and multi-point mean calculation also gives you a quick indication of the average air velocity, for example at a ventilation grille.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature NTC:
Measuring range: -20 to +60 °C
Accuracy: ±0.5 °C
Resolution: 0.1 °C

Velocity Vane:
Measuring range: 0.4 to 30 m/s
Accuracy: ±(0.2 m/s + 2 % of mv) (0.4 to 20 m/s)
Resolution: 0.1 m/s

General technical data:
Dimensions: 154 x 43 x 21 mm: Operating temperature: -20 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 130 h
Diameter vane: 40 mm
Storage temperature: -20 to +60 °C

Measurement of the flow and return temperature of heating systems
Measurement of temperatures in refrigeration systems in order to calculate superheating and subcooling
Easy to use at measuring points that are far apart
Rapid detection of temperature changes via graphical progress display

Combined with a smartphone or tablet, the testo 115i clamp thermometer is the ideal temperature measuring instrument for carrying out servicing and troubleshooting on air conditioning and refrigeration systems, as well as for installing them. It can also be used to measure flow and return temperatures.

Product Description
Professional measuring technology is now mobile: when it comes to temperature measurements at widely spaced measuring points in particular, the testo 115i makes things much easier – thanks to a wireless connection to the smartphone or tablet. When used in conjunction with the testo 549i pressure measuring instrument, individual refrigeration system parameters can also be calculated.

Measuring using the App offers lots of advantages
Measurement data is transmitted wirelessly from the clamp thermometer to the testo Smart Probes App and can be viewed conveniently on your smartphone or tablet – either as a chart or in table form. Temperature changes are therefore immediately evident. The measurement data log can be emailed directly as a PDF or Excel file. This saves you time, allowing you to further increase your efficiency.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1.3 °C (-20 to +85 °C)
Resolution: 0.1 °C

General technical data:
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 150 h
Storage temperature: -20 to +60 °C

Non-contact infrared measurement of surface temperature
Easy selection of emission level via stored materials list
Highly visible marking of the measuring spot thanks to 8-point laser
Image documentation with readings and measuring spot marking

Carry out non-contact and App-controlled measurement of wall temperatures, as well as fuse and component temperatures in air conditioning systems: with the professional testo 805i infrared thermometer with 8-point laser circle for highly visible measuring spot marking.

Product Description:
The testo 805i infrared thermometer, in conjunction with a smartphone or tablet, functions as a compact IR thermometer for wall temperatures, as well as fuse and component temperatures in air conditioning systems. The measuring point is marked clearly with a laser circle made up of eight dots – so you always know precisely where to measure.

Documentation including images via App on a smartphone/tablet
With the testo Smart Probes App installed on a terminal device, users can view their readings conveniently. And that's not all: the App can also be used to create and document images, including temperature values and laser marking. A separate measurement menu makes it easier to detect areas that are susceptible to mould. Particularly useful: a list containing the emission levels of certain materials is already stored in the App, so there's no longer any need to waste your time looking these up in tables. All measurement data is displayed either as a chart or in table form. The measurement data log can then be emailed directly as a PDF or Excel file.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Temperature Infrared:
Measuring range: -30 to +250 °C
Accuracy: ±1.5 °C or ±1.5 % of mv (0 to +250 °C)
±2 °C (-20 to -0.1 °C)
±2.5 °C (-30 to -20.1 °C)
Resolution: 0.1 °C

General technical data:
Dimensions: 140 x 36 x 25 mm
Operating temperature: -10 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 30 h
Storage temperature: -20 to +60 °C

Measurement of high and low pressure
Quick and easy installation at the pressure connection
Low refrigerant loss thanks to hose-free application
Measuring range -1 to +60 bar

The professional and compact testo 549i high-pressure measuring instrument can be controlled via the testo Smart Probes App using your smartphone or tablet, and is ideal for carrying out servicing and troubleshooting on air conditioning and refrigeration systems. The App also enables evaporation and condensation temperatures to be calculated automatically.

Product Description:
Testo offers you greater mobility when measuring: used in conjunction with your smartphone or tablet, the handy testo 549i high-pressure measuring instrument is suitable for carrying out wireless servicing and troubleshooting on air conditioning and refrigeration systems, as well as for installing them. The measuring instrument can be set up quickly and easily, directly at the pressure connection. The testo 549i makes working on widely spaced pressure connections considerably easier thanks to wireless connection to a smartphone or tablet. Also practical: no hoses are required for measurements, meaning that no or only very little refrigerant is lost. When used in conjunction with the testo 115i clamp thermometer, individual refrigeration system parameters can also be calculated.

More measuring convenience thanks to the App
Readings can be viewed conveniently on your terminal device via the testo Smart Probes App. The App also enables evaporation and condensation temperatures to be calculated automatically. All measurement data is displayed either as a chart or in table form. The measurement data log can be emailed directly as a PDF or Excel file.

System requirements:
iOS 8.3 or later
Android 4.3 or later
Bluetooth 4.0

Technical data:
Pressure measurement:
Measuring range: -1 to +60 bar
Accuracy: ±0.5 % of fsv
Resolution: 0.01 bar
Probe connection: 7 / 16 " UNF
Overload rel. (high pressure): +65 bar

General technical data:
Dimensions: 125 x 32 x 31 mm
Operating temperature: -20 to +50 °C
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 3 AAA micro batteries
Battery life: 150 h
Pressure media: CFC, HFC, HCFC, N, H₂O, CO₂
Storage temperature: -20 to +60 °C

For completely wireless measurements on refrigeration and air conditioning systems and heat pumps. Thanks to the Bluetooth vacuum probe supplied, you can even measure vacuum without any cables or hoses. You will get the testo 557s smart digital manifold with Bluetooth and 4-way valve block, one testo 552i wireless vacuum probe (Bluetooth), two testo 115i wireless clamp thermometers (Bluetooth, NTC), a hose filling set with 4 hoses and a robust transport case. For other wireless measurements, the Testo Smart Probes are ideal.

Completely wireless measurements and all results at a glance: thanks to Bluetooth probes and large graphic display
Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
Easy, wireless, flexible measurements and documentation: Temperature and vacuum measurements via automatic Bluetooth® connection, testo Smart App for documentation and lots more

Applications:
Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the appropriate measuring instrument, e.g. Testo Smart Probe)
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 557s - Smart digital manifold with Bluetooth and 4-way valve block:
Temperature:
Measuring range: -50 to +150 °C
Accuracy: ±0.5 °C
Resolution: 0.1 °C
Probe connection: 2 x Plug-in (NTC)
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0.5 % fs
Resolution: 0.01 bar
Probe connection: 3 x 7/16" – UNF + 1 x 5/8'' – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 1243 g
Dimensions: 229 x 112.5 x 71 mm (LxWxH)
Operating temperature: -20 to +50 °C
Protection class: IP54
Product colour: Black
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 4 x type AA batteries
Battery life: 250 h with no illumination, no Bluetooth®h (without illumination, without Bluetooth®, without vacuum probe); 100 h with illumination and Bluetooth®
Radio range: 150 m
Pressure media: CFC
Refrigerants in instrument: R1234yf; R744 (CO?); R437A; R503; R452A; R500; R114; R444B; R407H; R422B; R434A; R410A; R290; R449A; R401B; R407F; R13; R123; R718 (H?O); R404A; R125; R416A; R421B; R422C; R448A; R22; R407A; R409A; R12; R454B; R414B; R442A; R1233zd; R420A; R424A; R458A; R427A; R450A; R124; R502; R1234ze; R600a; R23; R402B; R455A; R454A; R407C; R453a; R513A; R401A; R422D; R402A; R507; R454C; R408A; R421A; R134a; R32; R452B; R438A
System requirements: requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: testo 552i - App-controlled wireless vacuum probe
General technical data:
Weight: 142 g
Dimensions: 150 x 32 x 31 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP54
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 3 AAA micro batteries
Battery life: 39 h
Connection: 7/16“ UNF
Interface: Bluetooth 4.2
Storage temperature: -20 to +50 °C
Absolute Pressure:
Measuring range: 0 to 26.66 mbar / 0 to 20000 micron
Accuracy: ±10 micron + 10 % of mv (100 to 1000 micron)
Resolution: 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) / 100 micron (2000 to 5000 micron)
Overload: absolute: 6.0 bar / 87 psi (relative: 5.0 bar / 72 psi)

Technical Data: testo 115i - Clamp thermometer operated via smartphone
Temperature - NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1.3 °C (-20 to +85 °C)
Resolution: 0.1 °C
General technical data:
Weight: 127.4 g
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth
Radio range: 100 m
Storage temperature: -20 to +60 °C

Measurement data monitoring via testo Smart Probes App
Measurement data dispatch via testo Smart Probes App
Extremely precise, extremely rugged, extremely practical – with visual alarm and backlit display
Measures pressure and calculates the evaporation temperature of H2O automatically

Extremely precise, rugged and practical: the testo 552 digital vacuum gauge. Ideal for evacuating refrigerant systems or heat pumps.

Product Description:
The testo 552 is a high-precision digital vacuum gauge designed to provide you with absolutely reliable readings. It has all the measuring functions you need for evacuating refrigerant systems and heat pumps and is built to last and tough enough to take the odd knock.
Via a Bluetooth interface, the testo 552 connects with the testo Smart Probes App on your smartphone or tablet. This allows you to monitor the absolute pressure reached during the evacuation conveniently and wirelessly. In addition to this, the measurement results can be quickly documented in the App and sent by e-mail.

The testo 552 digital vacuum gauge – areas of application
Evacuating is one of the most important steps when it comes to installing or restarting refrigerant or air conditioning systems: foreign gases, moisture and oils have to be removed properly. That’s when the absolute pressure of a system needs to be measured.
And that’s exactly what the testo 552 digital vacuum gauge is designed to do: the meter provides you with highly accurate information regarding the dehumidification status of the system and is able to measure even the smallest of absolute pressures absolutely reliably. This means that you are always able to observe manufacturer specifications. A visual alarm warns immediately when a threshold has been exceeded.
And because the digital vacuum gauge is IP42 rated (water resistant and dirt proof), it is virtually impervious to moisture and dirt.

Technical data:
Absolute Pressure:
Measuring range: 0 to 26.66 mbar /
0 to 20000 micron
Accuracy: ±(10 micron + 10 % of mv) (100 to 1000 micron)
Resolution: 1 micron (0 to 1000 micron) /
10 micron (1000 to 2000 micron) /
100 micron (2000 to 5000 micron) /
Overload: absolute: 6.0 bar / 87 psi
(relative: 5.0 bar / 72 psi)

General technical data:
Dimensions: 160 x 110 x 50 mm
Operating temperature: -10 to +50 °C
Protection class: IP42
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Battery type: 2 AA
Battery life: 50 hrs (without Bluetooth/backlighting)
Connection: 2 x 7/16“ UNF
Interface: Bluetooth® 4.0 wireless technology
Parameter: mbar; micron; mmHg; Torr; inHg; inH20; hPa; Pa
Measuring rate: 0.5 s
Storage temperature: -20 to +50 °C
Weight: 500 g

Can detect all the most common cooling agents: CFCs, HFCs, FCs
Highly sensitive – detects even the smallest leaks
Easy-to-use one-button operation
Complies with specifications for F gases regulations, SAE Code J1627 and DIN EN 14624:2012 standard

Leak detection in refrigeration engineering? Sure thing! The testo 316-3 refrigerant leak detector can detect all the most common cooling agents and locate even the smallest leaks. Complies with all important regulations and norms. One piece of kit you as a refrigerant technician won’t want to be without.

Product Description:
The testo 316-3 refrigerant leak detector is one piece of kit that you as a refrigerant technician just won’t want to be without. The handheld leak detector can detect all the most common cooling agents. And the smallest leaks. Comes with an automatic zero setting that also enables you to locate leaks in contaminated rooms.

testo 316-3 leak detector – benefits at a glance
Can detect all common cooling agents: CFCs, HFCs, FCs
Highly sensitive ( < 4 g/a 1g/a according to DIN EN14624:2012 standard) can detect even the smallest leaks
Ready for use – there’s no need to select cooling agent characteristics first
Automatic zero setting – can detect leaks in rooms that are already contaminated
Visual and audible alarm which are activated when a leak is detected
Quick and easy sensor change
Complies with specifications for F gases regulations, SAE norm J1627 and DIN EN 14624:2012 standard

General technical data:
Operating humidity: 20 to 80 %RH
Operating temperature: -18 to +50 °C
Detectable: R22; R134a; R404A; R410A; R507; R438A; and all CFCs, HFCs, and HCFCs
Sensitivity: 4 g/a (0.15 oz/a)
Life-time sensor: Approx. 80 to 100 h (corresponds to approx. 1 year)
Standards: EN 14624:2012; SAE J1627
EU-/EG-guidelines: 2004/108/EG
Battery type: 2 x D
Battery life: 16h permanent operation
Storage temperature: 0 to +50 °C
Weight: 500 g (incl. batteries)

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. Thanks to the Bluetooth vacuum probe supplied, you can even measure vacuum without any cables or hoses. You will get the testo 557s smart digital manifold with Bluetooth and 4-way valve block, one testo 552i wireless vacuum probe (Bluetooth), two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. For other wireless measurements, other optionally available testo Smart Probes are also ideal.

- Completely wireless measurements and all results at a glance: thanks to Bluetooth probes and large graphic display
- Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
- Easy, wireless, flexible measurements and documentation: Temperature and vacuum measurements via automatic Bluetooth® connection, testo Smart App for documentation and lots more

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the appropriate measuring instrument, e.g. Testo Smart Probe)
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

Technical Data: testo 557s - Smart digital manifold with Bluetooth and 4-way valve block
Temperature:
Measuring range: -50 to +150 °C
Accuracy: ±0,5 °C
Resolution: 0,1 °C
Probe connection: 2 x Plug-in (NTC)
Pressure measurement:
Measuring range: -1 to 60 bar
Accuracy: ±0,5 % fs
Resolution: 0,01 bar
Probe connection: 3 x 7/16" – UNF + 1 x 5/8'' – UNF
Overload rel. (high pressure): 65 bar
General technical data:
Weight: 1243 g
Dimensions: 229 x 112,5 x 71 mm (LxWxH)
Operating temperature: -20 to +50 °C
Protection class: IP54
Product colour: Black
Auto-off: 10 min (*when not connected via Bluetooth)
Battery type: 4 x type AA batteries
Battery life: 250 h with no illumination, no Bluetooth®h (without illumination, without Bluetooth®, without vacuum probe); 100 h with illumination and Bluetooth®
Radio range: 150 m
Pressure media: CFC
Refrigerants in instrument: R1234yf; R744 (CO₂); R437A; R503; R452A; R500; R114; R444B; R407H; R422B; R434A; R410A; R290; R449A; R401B; R407F; R13; R123; R718 (H₂O); R404A; R125; R416A; R421B; R422C; R448A; R22; R407A; R409A; R12; R454B; R414B; R442A; R1233zd; R420A; R424A; R458A; R427A; R450A; R124; R502; R1234ze; R600a; R23; R402B; R455A; R454A; R407C; R453a; R513A; R401A; R422D; R402A; R507; R454C; R408A; R421A; R134a; R32; R452B; R438A
System requirements: requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants update via App: R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature: -20 to +60 °C

Technical Data: testo 552i - App-controlled wireless vacuum probe
General technical data:
Weight: 142 g
Dimensions: 150 x 32 x 31 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP54
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 3 AAA micro batteries
Battery life: 39 h
Connection: 7/16“ UNF
Interface: Bluetooth® 4.2
Storage temperature: -20 to +50 °C
Absolute Pressure:
Measuring range: 0 to 26,66 mbar / 0 to 20000 micron
Accuracy: ±10 micron + 10 % of mv (100 to 1000 micron)
Resolution: 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) / 100 micron (2000 to 5000 micron)
Overload: absolute: 6,0 bar / 87 psi (relative: 5,0 bar / 72 psi)

Technical Data: testo 115i - Clamp thermometer operated via smartphone
Temperature - NTC:
Measuring range: -40 to +150 °C
Accuracy: ±1,3 °C (-20 to +85 °C)
Resolution: 0,1 °C
General technical data:
Weight: 127.4 g
Dimensions: 183 x 90 x 30 mm
Operating temperature: -20 to +50 °C
Product-/housing material: Plastic
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Battery type: 3 AAA micro batteries
Battery life: 150 h
Data transfer: Bluetooth®
Radio range: 100 m
Storage temperature: -20 to +60 °C