1. Battery: 9V DC or AC110, 220V AC
2. Alarm sound: ≥85db(3m)
3. Static current: <10μA
4. Alarm current: 12mA
5. Working temperature: -5 to +40 degrees Celsius
6. Working humidity: <95%RH
7. product size: 13.2×13.2×4.1cm