Specifications:

Wireless Smoke Detector
Operating voltage: DC9V 1*6F22 battery
Standby current: ≤ 10uA
Alarm current: ≤ 15mA
Alarm output: Wireless output/sound & flash alarm
Emission frequency: 315M/433M
Transmitting distance: 100m without block
Encoding method: 2262/1527/trundle code