This product is photoelectric type, and works on the principle that infrared scatters in the smoke to probe the smoke which is generated by both the incomplete combustion and combustion at the initial stage of the fire. The detecting chamber adopts special structure design and signal processing identification technology. It fits for indoor enviroment such as family use and public place.

Characteristic: 5y lithium battery operated

Power Source: : DC9V (CR2450 3VX3)
Current: Quiescent current≤ 10uA
Alarm current ≤ 20mA
Alarm decibel: ≥ 85dB/3m
Indicator: LED(red)
Low battery alert: ≤ 7.3V
Work Temperature: -10º C~+40º C
Environment humidity: ≤ 95%RH
Alarm type: Sound/light