The Duomo Gas Leak Detector is an affordable, reliable and simple-to-use unit that can quickly pinpoint gas leaks. Capable of detecting both Propane and Methane with high accuracy, the unit automatically calibrates itself at power and is ready to use in less than 60 seconds. Its 447mm probe and rapid response time (less than 10 seconds) make finding leaks in difficult environments easy. A 5-level LED leak alarm and audible beep mean you are constantly updated on the level of gas detected. A headphone jack means you never miss a beep in a busy or noisy environment. Supplied complete with batteries, instructions and a hard carry case to protect your device, this is the perfect device for gas leak detection.