ALTAIR® 4XR Multigas Detector

The MSA Altair 4XR is a multi-gas detector that excels in detecting levels of combustible gases, oxygen, carbon monoxide, and hydrogen sulfide using XCell sensors. This specific version of the detector is distinguished by its charcoal housing, which enhances its reliability, ruggedness, and real-time gas detection capabilities.

Featuring connectivity to a dedicated app, available for download from the Google Play Store, the Altair 4XR allows for seamless and prompt updating of settings. The app also enables real-time event notifications to be delivered via text message, ensuring immediate awareness of critical situations. Additional functionalities of the app include compliance reminders, the creation of notification groups, and the option to email calibration details.

The versatility of this multi-gas detector makes it suitable for various industries such as fire service, contracting, industrial, mining, oil and gas, and utilities. With its compliance feature, users can easily determine whether their MSA multi-gas detector has undergone bump testing, providing a quick overview of its compliance status.


Product Highlights


  • Survives 25 drops from 4 feet (1.2 meters) (MIL-STD-810G 516.6 Transit Drop 3rd Party Certified)
  • 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)


  • Sense gas 2 times faster than the industry average with our XCell sensors
  • 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

Product Details & Specifications

Make: MSA

Applications: Confined Space

Industries: Construction, Fire Service, General Industry, Mining, Oil & Gas, Utilities