The lightning fast smart, door and window sensor.
Shelly Door/Window designed to detect and report opening and closing of doors and windows.
Compact design allows it to be easily installed on any door or window.
Lightweight and nearly invisible.

The Xiaomi Mi Smart Wireless Switch is an easy to use single-button switch that controls your Mi Smart devices like lights, air conditioners, Smart sockets, and air purifiers. Very easy to install with no installation tools needed, simply pair it to your control hub and stick it to a surface to begin using. The wireless switch is fully customizable so you can control exactly what you want with one simple button. This makes your smart homes even more convenient. Its small and flat design makes it easy to place just about anywhere in your home. You can also easily program one switch to affect many devices at once.
FEATURES:

Smart Switch for all your Smart Devices
No installation tools needed
Small and flat design
Easily place anywhere
Connects to control hub
Fully customizable

SPECIFICATIONS:

Colour: White
Working temperature: -5° - +40°
Operating humidity: 0 - 95%RH
Battery type: CR2032
Battery life: Standard environment >2 years (Depends on actual usage frequency)

WHAT'S IN THE BOX:

Xiaomi Mi Smart Wireless Switch x1