Description:  <br>  LED Display Sensitivity LPG LNG Coal Gas Leak Detector Alarm Monitor Alarm Sensor  Specification:  <br> Power supply: AC100V-AC240v<br> Power frequency: 50\/60Hz<br> Rated load: &amp;lt;2W<br> Detect gas: LPG，natural gas， town gas<br> Alarm concentration: 3% LEL-20%LEL<br> Alarm volume: &amp;ge;85dB<br> Working environment: -10\u2103-40\u2103<br> Relative humidity: &amp;lt;97%RH<br>  <br> Package Included:  <br> 1 x Gas Leak Detector Alarm Sensor  Details pictures: