The Ridgid Micro CD-100 Combustible Gas Detector provides simple and quick readings to identify the presence of combustible gases Detects Methane Propane Butane Ethanol Ammonia Hydrogen and many other combustible gases With adjustable sensitivity even low-levels of gases can be detected Ideal for ensuring proper gas line installations checking for maintenance and repair needs or quickly pinpointing combustible gas leaks The rugged ergonomic design makes it capable of withstanding jobsite rigour Tri-Mode Detection™ provides visual audible or vibration alert which can be adjusted for different environments A 16in flexible probe allows location and detection of leak in hard-to-reach and confined spaces Specifications Detection Range 0- 6400ppm Methane Alarm Sensitivity 40ppm Methane Calibration Automatic Power 4 x AA batteries supplied Classifications Class B Division 1