1. Detect the open/close status of doors & windows, and push notifications to mobile phones
2. Anti-demolition function, push notification when device is removed
3. Backup battery: CR123A 3V (not included)
4. USB Power supply: 5V 1A
5. Standby current: 10.7uA
6. Working Temperature: 0 - 40 degrees Celsius
7. Working humidity: 20% - 85%
8. Wireless frequency: 2.4GHz
9. Wireless protocol: Zigbee 3.0, IEEE 802.15.4
10. Network range: 55m
11. Product size: 82x27x23mm / 50x13x16mm
