433/866MHz smoke detector celling mounted wireless networking smoke se

Decription: Wireless smoke detecor , 1.Working Voltage:AC120V
2.Backup battery: 3V
3. Standby current â‰Â¤30uA, Alarm currentâ‰Â¤100mA
4. Alarm decibel :Alarm scope: â‰Â¥85dB(3m straight

Seller: Shenzhen JADE IOT-Sensing Technology CO.,LTD  China