RIDGID 36163 Model micro CD-100 Combustible Gas Detector, Gas Leak Detector Rugged and ergonomic design offers exceptional comfort and durability Tri-Mode Detection function lets you select between visual, audible and vibration alerts to best suit your environment Adjustable sensitivity settings provide precise leak locating with the touch of a button Field replaceable sensor allows for more up-time and less time waiting for repairs 16-inch (40 cm) flexible probe allows location and detection of leaks in hard-to-reach and confined spaces