ALTAIR 4XR Multi-Gas Detector for O2/LEL/CO/H2S

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Item #: 1017855
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ALTAIR 4XR Multi-Gas Detector for O2/LEL/CO/H2S

The ALTAIR 4XR multi-gas detector is a tough and durable 4-gas monitor that is backed by a 4-year warranty. The Altair 4XR features MSA XCell sensors, which sense gas two times faster than the industry average. The Rechargeable Li-polymer battery has a 24 hour runtime on each charge.

The ALTAIR 4XR can provide real-time texts and event notifications to team members, supervisors, safety managers, and others when paired with the MSA ALTAIR Connect app (available on Google Play) via a Bluetooth wireless connection. 


  • Send event notifications via text message with the ALTAIR Connect app
  • Can survive 25 drops from 4 feet (1.2 meters) (MIL-STD-810G 516.6 Transit Drop 3rd Party Certified) or an incidental drop onto concrete from 25-ft (7.5-m)
  • 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)
  • 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
  • MotionAlert option tells others that user has become immobile
  • User-activated InstantAlert notifies others of a potentially dangerous situation
  • 4-year instrument & sensor warranty

Additional configurations available. Contact us for additional details.

ALTAIR 4XR Multi-Gas Detector for O2/LEL/CO/H2S

Gas Types
Gas Range Resolution
0-1999 ppm
0-200 ppm
0-100 ppm
0-20 ppm
0-50 ppm
1 ppm
1 ppm
0.1 ppm
0.1 ppm
0.1 ppm
Warranty 4 years (+ optional 1-year extension)
Durability 25-foot (7.5 m) drop protection
MIL-STD-810G drop protection
Certified IP68 rating
Temperature Range 40°F to +140°F
-40°C to +60°C
Relative Humidity 5% - 95% intermittent
15% - 90% non-condensing
Power Rechargeable Li-polymer battery
24-hour run-time
< 4 hour charge time
Physical 4.4 “ x 3.0” x 1.4”
11 cm x 7.6 cm x 3.5 cm
8 oz (228 g)
Datalogging > 50 hours (adjustable)
> 500 event logs
Certifications Class I, Division 1, Groups A, B, C & D
Class II, Division 1, Groups E, F & G
Class III, Division 1

ALTAIR 4XR Multi-Gas Detector for O2/LEL/CO/H2S

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