You are here:

Carbon Monoxide Replacement Sensor for AreaRae / MultiRae / ToxiRae Pro

Ships directly from the manufacturer, shipping times may vary.




Genuine Carbon Monoxide Replacement Sensor for AreaRae / MultiRae / ToxiRae Pro gas detectors from Rae Systems by Honeywell.

All specifications have been verified under the following environmental conditions:

  • Temperature: 68°F
  • Relative Humidity (non-condensing): 50%
  • Ambient Pressure: 1 atm (1,013 mbar)

Refer to the Technical Note TN-114 for a glossary of terms used on this page

Additional information

Weight .5 lbs


Sensor Type Electrochemical
Range 0-500 ppm
Resolution 1 ppm
Bias/Equilibration No bias/10 minutes after installation
Drift < 2% signal loss/month
Storage Life 6 months in sealed container
Operating Life 2 years in air
Calibration Gas 50 ppm Carbon Monoxide in Nitrogen
Maximum Overload 1,500 ppm CO
Temperature Range -4°F to 122°F
Storage Temperature Range 32°F to 68°F
Pressure Range Atmospheric ±10%
Operating Humidity 15 to 90% rH non-condensing
Warranty 2 years from date of shipment

Cross Sensitivities

Response w-o Filter1/with Filter2
250 ppm
250 ppm/NT3
Butane 100 ppm 1 ppm/1 ppm
10 ppm
0-1 ppm/NT
200 ppm
0 ppm/0 ppm
100 ppm
16 ppm/NT
Ethylene Oxide 125 ppm ≥40 ppm/NT
100 ppm
40 ppm/40 ppm
Hydrogen Sulfide 10 ppm 0 ppm/0 ppm
Hydrogen Chloride
10 ppm
0 ppm/0 ppm
500 ppm
0 ppm/0 ppm
100 ppm
9 ppm/4 ppm
Isobutylene 1,000 ppm 30 ppm/22 ppm
100 ppm
0 ppm/0 ppm
Ammonia 100 ppm 0 ppm/0 ppm
0-4 ppm/NT
Nitric Oxide
35 ppm
0 ppm/0 ppm
Nitrogen Dioxide
5 ppm
0 ppm/0 ppm
Propane 100 ppm 0 ppm/0 ppm
Sulfur Dioxide
5 ppm
0 ppm/0 ppm
TCE 100 ppm 25 ppm/15 ppm

1 – New sensor specifications. Used sensors show increasing response to VOCs.
2 – A disk shaped activated carbon fiber filter placed on top of the CO sensor helps reduce the response to VOCs
3 – Not tested (NT)


Technical Note: TN-114 – Sensor Specifications and Cross Sensitivities for Carbon Monoxide Replacement Sensor

Disclaimer: Technical Note TN-114 presents specifications, cross sensitivities and calibration information on select Rae Systems by Honeywell sensors. All specifications presented in this Technical Note reflect the performance of standalone sensors. For instrument specifications, please refer to product datasheets and manuals. Actual sensor characteristics may differ when the sensor is installed in different instruments. As sensor performance may change over time, specifications provided are for brand new sensors.

Product Enquiry