SONOFF SNZB-04-ZigBee Wireless Door/Window Sensor

Remind you when the door/window is open and closed.
Sync the opening & closing status of door/window on APP.
Can make ZigBee and Wi-Fi devices keep linkage.
Control the light with an action.
Support adding the SONOFF camera to view what happened at your home.
Share control makes other users control the connected device quickly.
3-month history records check .
Low-battery notification.
Simple peel and stick installation.
Note 1: SNZB-04 needs to be used with Zigbee Hub.