MSA ALTAIR Oxygen (O2) Maintenance Free Single-Gas Detector - 10092523 Designed for superior lifespan—patented sensors operate for over two years—and high performance, the ALTAIR Single-Gas Detector is the smart choice for...

MSA ALTAIR Hydrogen Sulfide H2S Single Gas Monitor - 10092521 Designed for superior lifespan—patented sensors operate for over two years—and high performance, the ALTAIR Single-Gas Detector is the smart choice for market-leading,...

MSA ALTAIR Carbon Monoxide (CO) Maintenance Free Single-Gas Detector - 10092522 Designed for superior lifespan—patented sensors operate for over two years—and high performance, the ALTAIR Single-Gas Detector is the smart choice for...

Based on the industry-standard ALTAIR Single-Gas Detector—but with added features and functionality—ALTAIR Pro toxic gas and oxygen detectors combine reliable detection and LED/audible/flashing/vibrating alarms with clear, backlit LCD...