






🛠️ Stay ahead of danger with the ALTAIR 4XR — your portable, powerhouse gas guardian.
The MSA ALTAIR 4XR is a professional-grade handheld multigas detector designed to measure oxygen, hydrogen sulfide, carbon monoxide, and explosive gases with no cross-channel interference. Featuring a rugged MIL-STD-810G and IP68-rated design, it withstands tough industrial environments and drops up to 25 feet. With a 24-hour rechargeable battery, extensive data logging of over 500 alarm events, and smart alert features like MotionAlert and InstantAlert, it ensures continuous safety compliance. Compatible with MSA’s XCell sensors and automated test systems, it’s the ultimate tool for reliable, traceable gas monitoring.




| Brand | MSA |
| Style | O2, H2S, CO |
| Power Source | Battery Powered |
| Color | BLACK |
| Product Dimensions | 1.37"D x 3"W x 4.4"H |
| Item Weight | 0.51 Pounds |
| Alarm | Audible, Visual |
| Operating Humidity | 95 percent |
| Upper Temperature Rating | 50 Degrees Celsius |
| Sensor Type | Catalytic, Electrochemical |
| Number of Items | 1 |
| Manufacturer | MSA |
| Part Number | 10178557 |
| Item Weight | 8.1 ounces |
| Item model number | 10178557 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | This product is covered by a 4 year warranty. For more information, visit the MSA website. |
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