* Durable Gas and Co sensor head.
* Self test function
* Hush Button
* Two-tone LED lights

* Power supply: AC220V/50~60Hz & 9v back-up battery.  
* Static current: ≤40MA
* Alarm current: ≤80MA
* Alarm volume: ≥85dB within 1 meter
* Operation Ambient Condition: 4~38, 25~85%R.H.
* Sensitivity Setting:  
Carbon monoxide: 150+/-50ppm  
* Alarm density: Coal gas: 1000~5000ppm, Liquid petroleum gas: 1000~5000ppm, natural ga
1000ppm~5000ppm
*.Responding time: Gas ≤30S    
* Can be connected with Valve (220VAC and 12VDC output are both available)
* Meet the standard of EN50194 and EN50291