The AMC 1ACOs Gas Monitor provides an economical standalone carbon monoxide monitoring package, incorporating state of the art sensing technology and micro-controller based design to provide accurate gas detection capabilities within a compact package. The AMC-1ACO incorporates a robust steel enclosure designed to provide optimal gas flow ensuring rapid response. It is ideally suited for smaller parking and/or service garages for detecting the exhaust of gasoline, propane, or natural gas powered vehicles.