The ToxiRAE 3 is a full-featured single gas monitor that offers unequaled cost of ownership value. The ToxiRAE 3 is compatible with the AutoRAE Lite bump and calibration station. STEL, TWA, low, and high alarms can also be recorded. The detector is warranted for 2 years and maintenance free with replaceable battery.

Please note this product is coming to it's end of life.  AES will continue to support your ToxiRAE 3 with service, repair, warranty replacement parts, or an equivalent product replacement until September, 2021. 

  • Lowest cost of ownership on the market.
  • Rugged steel housing for harsh environments.
  • Fastest instrument response time on the market for better protection and worker safety.
  • Fastest bump station on the market with highest productivity, putting workers back to work quickly.
  • Compact, low-cost bump and calibration station enables the ability to put the bump capability where it is needed.
  • 0.1 ppm H2S resolution, and high-range 1999 ppm CO available
  • Full activity records when used with AutoRAE Lite calibration station
  • Intuitive, simple-to-operate user interface
  • Loud, 95 dB audible alarm, bright red flashing visible LEDs and internal vibration alarm


Sensor Specifications

Gas Range Resolution
Hydrogen Sulfide (H2S) 0-100 ppm 0.1 ppm
Carbon Monoxide (CO) 0-500 ppm 1 ppm
Carbon Monoxide (CO) 0-1999 ppm 1 ppm

Detector Specifications

Size 3.4" x 2.2" x 0.8" (8.6 cm x 5.5 cm x 2.0 cm)
Weight 3.5 oz (99.4 g)
Battery User-replaceable 2/3 AA high-capacity lithium
  • 95 dB typical (at 30 cm) buzzer and flashing red LED to indicate exceeded preset limits
  • High: Displays “High” and emits 3 beeps and flashes per second
  • Low: Displays “Low” and emits 2 beeps and flashes per second
  • STEL: Displays “STEL” and emits 1 beep and flash per second
  • TWA: Displays “TWA” and emits 1 beep and flash per second
  • Vibration alarm
  • 6-LED visible alarm
Data Logging 10 events
Response Time T90 < 12 seconds
IP Rating IP-67
EMI/RFI Highly resistant to EMI/RFI. Compliant with EMC directive 89/336/EEC
Certification US and Canada: C1D1, Groups A, B, C, D, T4
Europe: ATEX II 1G EEx ia IIC T4
Operating Temperature Continuous: -4° to 140° F (-20° to +60° C)
Intermittent: -22° to 140° F (-30° to +60° C)
Humidity 0 to 95% relative humidity (non-condensing)
Warranty 2 years, including sensor and battery if used within specs
Calibration Two-point calibration for zero and span

*Specifications are subject to change


  • Oil and Gas
  • HazMat
  • Civil Defense
  • Environmental
  • Emergency First Responders

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