1. Detect open/close status of the door/window
2. Battery type: AA LR6 1.5V * 2PCS (not included)
3. Stand by current: open:28.4uA, close:28.1uA
4. Trigger current: 43mA
5. Pairing current: 37mA
6. Working time: 4000 times
7. Operating temperature: 0 - 40 degrees Celsius
8. Operating humidity: 20% - 85%
11. Wireless type: 2.4GHz
12. Protocol: IEEE 802.11b/g/n
13. Wifi distance: 45m
14. Size：82mm x 42mm x 16mm / 82mm x 11mm x 18mm
2. Battery type: AA LR6 1.5V * 2PCS (not included)
3. Stand by current: open:28.4uA, close:28.1uA
4. Trigger current: 43mA
5. Pairing current: 37mA
6. Working time: 4000 times
7. Operating temperature: 0 - 40 degrees Celsius
8. Operating humidity: 20% - 85%
11. Wireless type: 2.4GHz
12. Protocol: IEEE 802.11b/g/n
13. Wifi distance: 45m
14. Size：82mm x 42mm x 16mm / 82mm x 11mm x 18mm