ToxiRAE II (O2)

Manufacturer: RAE Systems
Part Number: 045-0006-000
Order / Quote

The ToxiRAE II O2 is a single gas, personal protection monitor that continuously displays toxic gas concentrations. It costs just a little more than disposable detectors. Unlike typical disposables that only display "remaining life", the ToxiRAE II O2 is a full-featured gas monitor providing continuous, digital display of the gas concentration, STEL, TWA, and Peak values as well as high, low, TWA, and STEL alarms.
A simple to use one-button product, the ToxiRAE II O2 is easy to calibrate. Use the pre-set alarms, or modify the alarms to meet your specific requirements. In contrast to disposables that are turned on once and remain on until their batteries expire, you decide when and where to use your ToxiRAE II O2 and you turn it on and off accordingly.

Key Features

  • Large, easy-to-read continuous display of gas concentration in ppm
  • Displays STEL, TWA, and Peak values
  • Field replaceable filter and battery
  • 2-Year warranty
  • User adjustable high, low, STEL, and TWA alarms
  • Varying audio alarm signals for different alarm conditions
  • Bright red flashing alarm
  • Loud 90 dB buzzer
  • Built-in vibration alarm
  • Holds Peak values
  • Simple calibration
  • Durable, highly impact-resistant, carbon loaded ABS housing
  • Highly resistant to RFI interference
  • IP-65 rated weather resistant
  • Stainless steel corrosion resistant attachments
  • Small enough to be clipped onto a hard-hat, shirt pocket, shoulder-strap, or belt


  • 3.6" x 1.9" x 0.9" (9.3 cm x 4.9 cm x 2.2 cm)


  • 3.6 oz (102 g) with clip


  • User-replaceable 2/3 AA high-capacity Lithium battery (use only RAE Systems batteries); extra battery included for use if maximum alarm minutes are exceeded

Operating Period

  • 2 years typical battery life for sensor or 730 minutes of alarm


  • Easy-to-read LCD for continuous display of concentration in ppm and text messages


  • One-button operation

Direct Readout

  • Instantaneous display of toxic gas concentration in ppm (or oxygen in vol %)
  • STEL & TWA values
  • Peak hold
  • Alarm minutes consumed


  • Audible: 90dB at 10 cm
  • Visible: Bright red/green LED bar visible from top, front, and sides
  • Sensory: Built-in vibration alarm
  • High: Displays “High,” emits 3 beeps and flashes every 3 seconds
  • Low: Displays “Low,” 2 beeps and flash every 3 seconds
  • STEL: Displays “STEL,” 1 beep and flash every 3 seconds
  • TWA: Displays “TWA,” 1 beep and flash every 3 seconds
  • Low battery: Displays empty battery symbol, 1 beep per minute


  • Range 0-30%        Resolution 0.1%


  • Two-point field calibration; auto-zero at startup, user-initiated span/standard reference gas


  • -40° to 131° F (-40° to 55° C)


  • 0 to 95% relative humidity (non-condensing)


  • Highly resistant to EMI/RFI. Compliant with EMC Directive 89/336/EEC

IP Rating

  • IP-65: protected against dust, protected against low-pressure jets of water from all directions

Hazardous Area Approval

  • UL/cUL Classified as Intrinsically Safe for use in Class I Area Approval Division 1, Groups A, B, C, D
  • Hazardous Locations T5 rating (UL/cUL, ATEX)
  • ATEX, II 1G, EEx ia IIB T5, or II 2G, EEx ia IIC T5
  • CE Mark, European Conformity
  • IECEx Ex ia IICT4


  • Wrist strap, stainless steel alligator clip (installed), stainless steel belt clip/hardhat adapter


  • 2-year
Specifications are subject to change

  • Refineries
  • Oil production
  • Contractors
  • Scheduled plant maintenance turnarounds
  • Chemical plants
  • Fire service
  • Industrial safety
  • Pulp & Paper
  • Heavy industry
  • Waste water treatment plants
  • Shipyards and maritime
  • Landfill operations
  • Trenches, silos, railcars
  • Power plants
  • Steel mills