Gas Detector Sensor Gas Detected Carbon Monoxide Measurement Range 0 to 200 ppm Compatible Detector Model/Series ALTAIR 2X Sensor Type Catalytic For Detector Type Portable T90 Response Time 15 sec Compatible Detector Manufacturer Part Number 10154040 10154181 10154185 10154186 Sensor Life 4 yr Series ALTAIR 2XR Features Quick Response Time Resolution 1 ppm Operating Temperature - Maximum 104 Degrees F Operating Temperature - Minimum -10 Degrees F Chemical Formula CO H2S