Gas Detector Sensor Gas Detected Oxygen Measurement Range 0 to 30 Percent vol Compatible Detector Model/Series PM400-IR PM400-IR2G PM400-P PM400-P2G Compatible Detector Grainger Part Number 54XL76 54XL77 68KA07 68KA08 Sensor Type Electrochemical For Detector Type Portable T90 Response Time 10 sec Compatible Detector Manufacturer Part Number PM400-IR PM400-IR2G PM400-P PM400-P2G Sensor Life 2 yr Series PM400 Series Sub-Brand AimSafety