The Plasma BAR and Plasma Bar-X ionization assembly is powered with a remote Control Panel. The Plasma BAR-X Control Panel includes a monitoring circuit to verify operation status. The circuit consists of a relay with isolated normally open contacts. The contacts remain open whenever the ionization system is not powered or if there is a fault in the equipment. Whenever the ionizer is energized and producing ions, the normally open contacts close and the green ion indicator light will illuminate. Connect the monitoring control wires of the Building Automation System (BAS) to the dry contacts on the unit.