4 in 1 Gas Detector Digital 4 in 1 CO O2 H2S EX Gas Detector with Pump Sampling
O2 CO H2S EX. Gas Detector. portable multi 4 in 1 gas detector with built-in pump. Gas curve display. Gas Sensor Life. Ex ib IIC T4 Gb. 400g (with battery). DC3.7V Li-on battery, 3200mAh.