smoke detector,wireless smoke alarm,CO alarm,home smoke alarm,gas alarm,LPG,LNG,PNG Power source: DC9V,AC110V/AC220V, DC9V/AC110V/AC220V Static current:: <10uAalarm current <10mA;Alarm sound: >85dB(3M)Ambient temperature: -10°C~40°CAmbient humidity: ≤95%(40±2°C)Low battery Alarm: 6V±0.5V..