The MSA ALTAIR 5X Gas Monitor for comprehensive, simultaneous detection of up to five critical atmospheric hazards. This unit delivers fast, reliable, and highly accurate readings of Oxygen (O2), Combustibles (LEL), Hydrogen Sulfide (H2S), Carbon Monoxide (CO), and Sulfur Dioxide (SO2), ensuring maximum safety in refineries and chemical environments. Its rugged design and MotionAlertâ„¢ feature provide indispensable protection on any complex job site.