Xiaomi Mi Wireless Switch

Mi Smart Sensor Set – Mi Wireless Switch
To be used with the Mi Smart Sensor Set Small and flat design, just stick it somewhere, and it’s ready to work. One click to close all electrical appliances Make your Smart Home even more convenient Key Features:
No installation tools needed – stick to use
Fully customizable function: after paired to the control hub, this single button switch controls smart devices like, lights, air purifiers, air conditioners, smart sockets. ...Operate all smart devices with one button, when you are not near your smartphone. Specifications:
Working temperature: 5-40 degrees
Battery type : CR2032 What’s in the box
1 x Mi Wireless Switch