Features:

* Ceiling or wall mounting
* Easy to install with mounting hardware included
* 9VDC battery
* Suitable for any room
* Flash alarm indicator (red)
* Test button for easy recommended monthly testing
* Low battery signal
* Safety clip feature, not allow mounting of smoke alarm without battery installed
* Photoelectric  chamber for early detection from all directions
* High sensitivity carbon monoxide sensor
* Loud 85dB alarm signal

Specification:

* Power Source : 9VDC battery 
* Operating Current : 10 uA (normal) and 20-50 mA  (alarm working)
* Sensitivity to smoke : In comply with UL217 & BS5446: Part 1 2000
* Sensitivity to carbon monoxide:
* Response time:2MIN
* Alarming level:150ppm CO±30%
* Operating Temperature : 40oF - 100oF (4. 4C - 37.8C)
* Ambient Humidity : 10% - 90%.
* Horn Level : 85 Decibels at 10 feet.
* Battery life : 1 year min.
* Size: 110mmX25mm