gas detector (O2 H2S CO CH4) 1.Methane 2.Oxygen 3.Carbon ... is a new generation of intelligent multi-parameter detector which adopts low power consumption design. It has ... the characters of sound & light alarm, a detector serves several purposes, small and light, and convenient to ... protectionExibd IProtection gradeIP54Dimensions240×170×120mmWeight0.3Kg Multi-Gas Detector,4 Gas-CO,O2,H2S,CH4