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Altair 4XR Gas Detector, Quick detect and more durability



  • Sensor Options
  • 1. Combustible (LEL)
  • 2. Oxygen
  • 3. Toxic
  •     a. CO / H2S
  •     b. CO (H2-Resistant) / H2S
  •     c. CO / H2S-LC
  •     d. CO / NO2
  •     e. SO2 / H2S-LC
  • Case Color
  • 1. Charcoal gray
  • 2. Glow-in-the-dark

Outfitted with rapid-response MSA XCell® sensors, the ALTAIR 4XR Gas Detector is the toughest 4-gas monitor on the market and is backed by a 4-year warranty. The ALTAIR 4XR can also provide real-time incident awareness to team members, supervisors, safety managers and others when paired with the MSA ALTAIR Connect app via a Bluetooth® wireless connection.


  • Real-time
  • Sense gas 2 times faster than the industry average with our XCell sensors
  • Quickly update MSA ALTAIR 4XR settings via the ALTAIR Connect app (available on the Google Play Store)
  • Send event notifications via text message with the ALTAIR Connect app
  • Rugged
  • Survives 25 drops from 4 feet (1.2 meters) (MIL-STD-810G drop protection)
  • Can survive an incidental 25-foot (7.5-m) drop onto concrete
  • Dust- and waterproof IP68 rating (2 meters for at least 1 hour)
  • Operating temperature range: -40°F to +140°F (-40°C to +60°C)
  • Reliable
  • 4-year instrument & sensor warranty
  • Confirm compliance quickly with the Bump LED & on-screen checkmark
  • Bump and calibrate with 1/2 the test gas and in 1/2 the time vs. industry average
  • Bump and calibrate at a specified “Time of Day” with your MSA GALAXY® GX2 Automated Test System
  • MotionAlert option tells others that user has become immobile
  • User-activated InstantAlert notifies others of a potentially dangerous situation
  • Markets: Fire Service, Contractor, Industrial, Mining, Oil & Gas, Utilities
  • Applications: Confined Space, Combustible Detection, Oxygen Detection, Toxic Detection


Alarm Set Points

Sensor TypeLowHighSTELTWA
Hydrogen Sulfide10ppm15ppm15ppm10ppm
Carbon Monoxide25ppm100ppm100ppm25ppm

Technical Specification

Drop test20 feet
HousingRugged rubberized armor
Weight7.9 oz
Dimensions (L x W x D)4.4 x 3.0 x 1.31
Audible alarm>95 dB at 1 ft
Visual alarm4 ultra-bright LEDs on top and bottom
Vibrating alarmStandard
MotionAlert & Instant AlertOptional
DisplayHigh-contrast LCD
BacklightAdjustable time-out
BatteryRechargeable li-polymer
Run time24 hours @ room temperature
Charging time< 4 hrs
Operating temperature range–20ºC to + 50ºC
Short Period Operation–40 °C to + 60 °C
Humidity15 – 90% RH non-condensing
Ingress protectionIP67
Data log(Adjustable) 50 hour minimum
Event logStandard 500 events





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Fax: +84 024 6675 4433
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