1. Working voltage: DC9V
2. Working current: static current alarm current is less than or equal to 10uA less than 45mA
3. Scope of application: Domestic
4. Relative humidity: less than 95%
5. Alarm sensitivity: II level,
6. Working temperature: -10 degrees C (14 degrees F - +50 - 122 degrees Fahrenheit)
7. Photoelectric detector + temperature detector