The Dwyer CLD20 combustible leak detector allows users to quickly locate leaks of combustible gases. Methane, butane, ammonia, ethylene oxide, alcohols, industrial solvents and other combustible or toxic gases are accurately detected by the CLD20. The adjustable tick rate accelerates as the sensor tip approaches a leak and can be re-zeroed to pinpoint the exact location of the leak. The Dwyer CLD20 offers visual LED indication of leak level and automatically recalibrates when turned off and on. Flexible gooseneck and small sensor head allows use in tight, difficult to reach areas.