1,Model No: AK-200FC/P 2,Detect Gas: LPG, Natural Gas, City Gas 3, Semiconductor Sensor 4, Power: 110VAC/220VAC, 12VDC-20VDC 5, Alarm Density: Coal Gas: 1000~5000ppm, Liquid Petroleum Gas: 1000~10000ppm, Natural Gas: 1000ppm~5000ppm Read More