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Handheld Pumping type O2 Single Gas Detector with Flash Light Function Color Screen To detect the oxygen O2 is also very important in mining environments. Breathing oxygen is absolutely necessary to human life....
...-90LM(stricty symmetry between left and right) LED type CREE LED chip Power consumption 4W per LED rear lights Color temperature range 6000-6700K LED quanity 4 pcs LED per lights Current stability ≤±2mA(in 2...