Combustible Gas Detector, Features Calibration Alert, Calibration Memory, Date/Time Display, Field Calibration, Infrared Downloading, Internal Pump, Intrinsically Safe Design (Certified), Operation Memory, Push Button Operation, Water/Dust Filter, Gases Detected Methane, Propane, Includes Extra Sensor Cap, Hard Carrying Case, Wrist Strap, Maximum Operating Temperature 120 Degrees F, Minimum Operating Temperature 0 Degrees F, PPM Detection Range 0 to 2,000 ppm, Probe Length 16 in