... visible display. It is applied to detect methane, natural gas, LPG, coal gas, ethane, propane, acetylene, butane, isobutene, pentane, ... STN dot-matrix LCD display• Quickly find the gas leakage point• Long and flexible gooseneck tube, adjustable ... concentration to full range Specifications:• Detecting Gas: combustible explosive gas (such as natural gas, LPG, etc)• Sensor: semiconductor• Detection Range ...