SONOFF SNZB-04 Wireless Door Window Sensor Alarm System On/off Alert

Description

Description:
Remind you when the door or window is open and closed.
Sync the opening and closing status of door or window on the phone APP.
Control the light with an action. Support adding the camera to view what happened at your home.
Share control makes other users control the connected device quickly.
Simple peel and stick installation.It features Low-battery notification.
Specification:
Battery: 3V, CR2450.(Included)
Material: PC.
Dimension: Part 1: 32x15.6x13mm, Sensor: 47x27x13.5mm.
Wireless connection: Zigbee 3.0
Note
There might be a bit color distortions due to different computer resolutions.
There might be a slight errors due to different hand measurement.
Package included:
1x Window alarm system.(Battery include)
1x User manual.