WiFi Graffiti Smart Smoke Alarm

Power supply: DC9V alkaline battery
Quiescent current: <10uA
Alarm current: <100mA
Detection area: 20
Alarm sound:> 80dB
Low battery alarm: ≦ 7.0 V ± 0.2 V
Working temperature: 0 ℃ ~ + 50 ℃

Humidity: ≤95% rh,