1. Detect open/close status of the door / window
2. Anti-demolition function,push notification when device is removed
3. Battery: CR123A 3V (not included)
4. USB Power supply :5V/1A
5. Standby current: 27.9uA
6. Wireless frequency: 2.4GHz
7. Wireless standard: IEEE 802.11b/g/n
8. Wi-Fi range: 45m
9. Size: 87x27x23mm / 50x13x16mm
