... .Full functions, easy operation 2.Compact design, easy carrying BX616 Multi-gas Detector:1.Full functions, easy operation2.Compact design, easy carryingFeatures:Natural ... explosion-proofGas sampling method Natural diffusion Gas sensor type Catalytic and electrochemical Detecting gas Combustible gas, H2S, CO, O2 Accuracy ≤±5% F.S. Response ...