1. Power supply: 9VDC

2. Static current: ＜35μA

3. Alarm current: ＜20mA

4. Alarm sonority: ≥85dB

5. Alarm density: 150±50PPM

6. Working temperature: 4℃--38℃

7. Working humidity: 25%--85%RH

8. Static indication: red LED light flash 1 time / second

9. Low voltage alarm: a sharp sound / 30 second

10. Product size: 10.2x10.2 x3.7cm