1.Measurement Gas:Natural gas,coal gas,methane, combustible gas. 2.Response Time:<1 sec 3.Sensitivty:<5PPM 4. ... sensitivity: 5ppmRapid warm up time: Within 110sNet weight: 613.5gCombustible Gas Detector AR8800A+ Detect ItemsDangerous explosive gasesAdjustable Senstivity√Constant Power Indication ... Bettery)ProductColorRedProduct Net Weight613.5gProduct Size234*86*46mm Combustible Gas Detector AR8800A+