Aqara Window & Door Sensor - MCCGQ11LM

Aqara Door and Window Sensor 

Detects if a window or door is closed in real time.

Peel & Stick | Local & Remote Alarm | 2 Years Battery Life

* An Aqara hub is required.

Aqara’s Door/Window Sensor (DWS) is a smart device featuring low power consumption, small size, and cost-efficiency, utilizing the ZigBee© wireless protocol. It is powered by a CR1632 battery, and complies with ZigBee’s HA1.2 (Home Automation) standard. The DWS communicates with the Aqara multi-functional gateway.

https://www.aqara.com/en/door_and_window_sensor-product.html