MSA’s ALTAIR 4XR Portable Gas Monitor delivers a complete, ready-to-use solution for detecting hazardous atmospheres across a wide range of applications. Designed for reliability in demanding environments, it provides fast, accurate readings to help keep your team safe and compliant.
The ALTAIR is widely used for leak detection, industrial plant maintenance, emergency response, firefighting support, and environmental monitoring. It’s also ideal for routine safety checks in industries such as mining, oil & gas, construction, utilities, and manufacturing.
Built with durability and ease of use in mind, the ALTAIR features intuitive operation, robust sensor technology, and trusted MSA performance. Whether you’re monitoring oxygen levels, combustible gases, or toxic exposures, it delivers dependable protection in a compact, portable device—making it an essential addition to any safety equipment setup.