Gas Detector Sensor, Gas Detected Carbon Monoxide, Measurement Range 0 to 500 ppm, Compatible Detector Model/Series AreaRAE, AreaRAE Plus, AreaRAE Pro, MultiRAE, MultiRAE IR, MultiRAE Plus, QRAE, QRAE Plus, RAEGuard, RAEGuard EC, ToxiRAE II, ToxiRAE Pro, VRAE, Compatible Detector Manufacturer Part Number AreaRAE, AreaRAE Plus, AreaRAE Pro, MultiRAE Family, MultiRAE IR, MultiRAE Plus, QRAE, QRAE Plus, RAEGuard, RAEGuard EC, ToxiRAE II, ToxiRAE Pro, VRAE