M2A series Detector Head Features LEL, O2, H2S, CO, CO2, 4-20 mA & digital Modbus outputs standard 2 fully programmable alarm relays & fail relay Non-intrusive calibration via magnetic wand Explosion proof construction Patented water repellent sensor cover Enquiry Name Email Address Select Category you are interested in Select Category you are interested inPortable Gas DetectionFixed Gas DetectionTemperature InstrumentsPressure InstrumentsOily Water SeparatorsBallast Water Management Systems Message 12 + 8 = Submit