Sonoff ZigBee door and window opening sensor SNZB-04P (+battery)

Door & Window Monitoring
Automatically turns on lights when a door or window is opened. Triggers audible and visual alarms for unauthorized entries and sends instant app notifications to keep you informed.

Tamper Alert
Built-in tamper protection notifies you immediately via the app if the sensor is tampered with, ensuring added security.

5-Year Battery Life
Powered by a CR2477 battery, providing over 5 years of reliable use without frequent battery changes.

Zigbee 3.0 Compatible
Seamlessly integrates with Zigbee 3.0 hubs like SONOFF NSPanel Pro, SONOFF iHost, ZB Bridge Pro, ZBDongle-E, and Echo Plus 2nd Gen.

Local Smart Scene Control
Scene linkage between Zigbee devices continues to function locally as long as devices are powered on, even if the network is disconnected.