MSA Altair 4x Multigas Detector with Bluetooth


The ALTAIR 4X Multigas Detector for LEL, CO, H2S and O2 is as tough and functional as it looks. A rugged housing provides unsurpassed durability, including the ability to survive a 20-foot drop. And with large, glove-friendly
buttons and a high-contrast display, the ALTAIR 4X Multigas Detector is easy to operate in any work environment, even low-light conditions.


The ALTAIR 4X is an extremely durable Multigas Detector that simultaneously measures up to four gases from a wide range of XCell(R) sensor options including combustible gases, O₂, CO, H₂S, SO₂ and NO₂. The ALTAIR 4X Detector surpasses industry standards in several crucial areas. Its four-year sensor life is 60% longer than the industry average, while its 24-hour run time exceeds the industry average by 71%. This versatile portable detector is a perfect match for industries ranging from fire fighting to welding, and its digital sensor output makes it less likely to suffer from RF interference. The unit features exclusive MotionAlert™, which lets others know if the user has become immobile, and InstantAlert™, a manual alarm that alerts others of potentially dangerous situations. This rugged unit is designed to withstand a drop of up to 20 ft (6m) and uses less than half as much calibration gas as the industry average. 

Real Time:
  • Quickly update MSA ALTAIR 4XR settings via the ALTAIR CONNECT APP
  • Senses gas 2 time faster than the industry average with our XCELL sensors
  • Send event notifications via text with the ALTAIR CONNECT APP.


  • Can survive an incidental 25 foot (7.5M) drop onto concrete\
  • Survives 25 drops from 4 feet (1.2M) (MIL-STD-810G 516.6 Transit Drop 3 Party Cert)
  • Dust and waterproof IP68 rating (2M for at least 1 hour)
  • Operating temp range: -40F to +140F (-40C to +60C).
  • Confirm compliance quickly with the Bump LED & on-screen checkmark
  • 4-year instrument & sensor warranty
  • Bump & calibrate with ½ the test gas and in ½ the time vs. industry average
  • MotionAlert option tells other that user has become immobile
  • User-activated InstantAlert notifies others of a potentially dangerous situation.



Additional information

Weight 1 kg


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