MSA ALTAIR Single-Gas Detector for O2 (19.5%, 23% volume)



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MSA ALTAIR single-gas detector for monitoring O2. Provides a minimum of two years of maintenance-free performance without the need for swapping out sensors or batteries.

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Designed for superior lifespan-patented sensors operate for over two years-and high performance, the ALTAIR Single-Gas Detector is the smart choice for market-leading, cost-effective gas monitors. Features sensor options for carbon monoxide, hydrogen sulfide, and oxygen coupled with LED/audible/vibrating alarms. Superior dust/water protection, high RFI resistance, and one-button operation provide heightened safety, plus increased durability and ease-of-use.


  • Sensor options for CO, H2S, and O2
  • Patented electrochemical sensors and MSA-built button sensors
  • Stainless steel and solid electrolyte construction virtually eliminate sensor leakage
  • Automatically records the last 25 alarm/test events and can communicate data by connecting to MSA Link via built-in IR communication port
  • No-miss triple alarm system includes bright flashing LEDs, piercing audible alarm, and an internal vibrating alarm
  • Rubberized armor housing and one-button operation for maximum durability and simplicity


  • Hydrogen Sulfide (H2S)
  • Carbon Monoxide (CO)
  • Oxygen (O2)

Alarm Set Points:

  • Low: 10ppm, High: 15ppm
  • Low: 25ppm, High: 100ppm
  • Low: 19.5%, High: 23.0%


  • Toxic Detection
  • Oxygen Detection
  • Construction
  • Fire Service
  • General Industrial
  • Industrial
  • Oil & Gas
  • Utilities
More Information
PN 10092523
Manufacturer MSA
Gas Types Oxygen (O2)
Sensor Range 0 to 25% Vol.
Operating Temperature -20ºC to +50ºC
Alarm Setting 19.5% to 23%
Alarm Type Visual_Vibrating_Audible
Dimensions 3.4” x 2.0” x 1.0”
Unit of Measure EA
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