• Bluetooth functionality is no longer available for ALTAIR® 4XR, 5X, 5X IR, and 5X PID Multigas Detectors as of July 2022
• 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 our 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
• Bump and calibrate at a specified "Time of Day" with your MSA GALAXY® GX2 Automated Test System
• MotionAlert option tells others that user has become immobile
• User-activated InstantAlert notifies others of a potentially dangerous situation

Sensor Options
1. Combustible (LEL)
2. Oxygen
3. Toxic
    a. CO / H2S
    b. CO (H2-Resistant) / H2S
    c. CO / H2S-LC
    d. CO / NO2
    e. SO2 / H2S-LC

Case Color
1. Charcoal gray
2. Glow-in-the-dark