Combustible Gas Detector, Calibration Certificate Type Available Separately, Gases Detected Acetone, Alcohol, Ammonia, Benzene, Butane, Ethylene Oxide, Gasoline, Halon, Hydrogen Sulfide, Industrial Solvents, Jet Fuel, Methane, Naphtha, Paint Thinners, Propane, Refrigerants, Toluene, Includes Battery, Detector, Manual, Maximum Operating Temperature 122 Degrees F, Minimum Operating Temperature 32 Degrees F, PPM Accuracy +/-5ppm, PPM Detection Range 50 ppm, Probe Length 18 in, Overall Height 8 in