1. Function: trigger alarm, make sound and light, remote on/off via APP
2. Automatically restore the previous settings with memory function when network or power off reconnecting
3. Battery: CR123Ax2 / 3V (not included)
4. USB Power supply: 5V/1A
5. Volume: 90db
6. Working Temperature: 0 - 40 degrees Celsius
7. Working humidity: 20% - 85%
8. Wireless frequency: 2.4GHz
9. Network range: 40m
10. Wireless protocol : Zigbee 3.0 IEEE 802.15.4
11. Size: 68mm x 68mm x 33mm