XR-2000-YX The 12V detector uses this company patent technology, does not need to give extra the transformer, a coordinate nanometer sensor, can detect the fuel gas density sensitively, the detector acousto-optics alarm when the gas concentration achieved certain standard, and transmit alarm signal to the police center. Product features: Lineate, 12VDC power supply Photic and phonic alarm, frequent on and off signal output Can detect: natural gas, liquid petroleum gas, artificial coal gas Designed of low consumption with insufficient power Technical parameter: Signal transmit method: Lineate Working power: 12VDC Consumption: static<1.3W alarm<1.7W Alarm volume: >70dB/M Emissive frequency: Photic and phonic alarm emissive frequency 315M or 433M [can set] Working environment:-10℃~45℃size:106mm?0mm