Model CHQ-MRC2(SCI) is a Single Input/Output Module, which provides a single, mains-rated relay output for the control of such devices as dampers, access control equipment (e.g. door magnets), extractors or plant and equipment shutdown. The monitored input can be used for local power supply 
fault monitoring or as a general-purpose input.
 
The unit is also available as a DIN Rail mountable version; with an integral short-circuit isolator. The CHQ-MRC2(SCI) utilises simple DIL switches for reliable addressing.