Ridgid Micro CD-100 Gas Detector The Ridgid Micro CD-100 Combustible Gas Detector provides simple & quick readings to identify the presence of combustible gases. Detects Methane, Propane, Butane, Ethanol, Ammonia, Hydrogen & 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 & 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 16 inch flexible probe allows location & detection of leak in hard-to-reach & confined spaces. Specifications: Detection range: 0- 6, 400ppm (Methane). Alarm sensitivity: 40ppm (Methane). Calibration: Automatic. Power Source: 4 x AA batteries (included). Classifications: Class B, Division 1.