QG-02 gas detector utilizes dedicated chip for intelligent control, self-check, it is very stable and reliable. It can alarm by sound and light, support multiply signal output, and can be used independently and be used along with control system.  
 
Technical Parameters: 
Items    Parameters
Power Supply    AV 220V
Static Power Consumption    <1.3W
Alarm Power Consumption    <1.7W
Working Temperature    -10℃~45℃
Working Humidity    30%-90%
Alarm Concentration    Natural Gas: 10-25%LEL; Liquefied Petroleum Gas: 10-25%LEL; City Gas: 10-25%LEL
Applicable Range    Can do reliable alarm for the excess concentration of natural gas, liquefied petroleum gas and city gas, and can be widely used by home, natural gas station, coal mine etc.