The BESANTEK BSTMG01CH4 Methane Gas Detector may be used in underground coal mining, the petrochemical industry, environmental protection and other spaces where explosive gases may exist. The BST-MG01CH4 is specifically designed to detect Methane gas, and produces a sound and light alarm when the CH4 gas concentration in the environment is higher or lower than that of preset alarm point. This device is portable and can be also used as a fixed device.