Each Zonecheck Addressable is supplied with an IMM. These IMMs are required to be wired to mains power, to the Zonecheck pump and the flow-switch. All IMMs are then wired in a loop back to a central Zonecheck Addressable Controller and printer which also requires mains power. Zonecheck Addressable can be configured in different ways to suit customer requirements which commonly includes wiring the monitored zone valves into the IMMs for increased functionality.