The Beacon 110 is a controller for a single, fixed system of gas detection. This versatile, low cost gas indicator solution works with any 4-20 mA transmitter. The audible alarm has two programmable alarm levels. A built-in trouble alarm with relay allows ventilation or automatic emergency dialing to be installed in coordination with the control box. Fixed systems such as the Beacon 110 are used for perimeter monitoring, with detection heads typically mounted and wired around the unit process area.