MSA Altair 4XR Multi-Gas Detector (LEL, O2, CO, H2S)

Outfitted with rapid-response MSA XCell® sensors, the ALTAIR 4XR Gas Detector is the toughest 4-gas monitor on the market and is backed by a 4-year warranty.
•    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
•    Operating temperature range: -40°F to +140°F (-40°C to +60°C)
•    Sense gas 2 times faster than the industry average with MSA XCell sensors
•    4-year instrument and sensor warranty
•    Confirm compliance quickly with the Bump LED and on-screen checkmark
•    Bump and calibrate with 1/2 the test gas and in 1/2 the time vs. industry average
•    MotionAlert option tells others that user has become immobile
•    User-activated InstantAlert notifies others of a potentially dangerous situation