The BESANTEK BSTMG06 Datalogging Multi-Gas Detector with Air Pump is applicable to underground coal mining, petrochemical industry, municipal, environmental protection and other spaces where multi gas may exist. This model can be used for detecting Methane (CH4) or Combustible Gas (LEL), Oxygen (O2), Carbon Monoxide (Co) and Hydrogen Sulfide (H2S) gases simultaneously. The BST-MG06 offers both audible and visible alarms with user-adjustable high and low alarm points.