The BESANTEK BSTMG01H2 Hydrogen Gas Detector may be used in underground coal mining, the petrochemical industry, environmental protection and other spaces where explosive gases may exist. The BST-MG01H2 is specifically designed to detect Hydrogen gas, and produces a sound and light alarm when the H2 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.