Combustible Gas Detector, Calibration Certificate Type Not Certified, Features LED Leak Level Indicator, Protective Boot, Gases Detected Gasoline, Includes Soft Carrying Case, Maximum Operating Temperature 125 Degrees F, Minimum Operating Temperature 32 Degrees F, PPM Detection Range 1 ppm, Probe Length 14 in, Overall Height 1 7/8 in, Manufacturer Warranty Length 1 yr, Battery Voltage 4.8V, Standards UL 913, Overall Depth 8 in, Overall Width 3 in, Battery Run Time 4 hr, Alert Type Sound, Light