1. Power supply: 9V battery

2. Standby current: <35μA

3. Alarm current: <20mA

4. Working temperature: 4°C-38°C

5. Working humidity: 25%-85%RH

6. Alarm sonority: ≥85db 7. Alarm density:150±50PPM

8. Static indication:the red LED light flash one time

per second

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

10. Product size:10.2 x10.2 x3.6cm