The MOD-RAM allows for a remote connection on all Outback and Luminor ultraviolet systems. The MOD-RAM is a dry (volt free) contact allowing for remote installation of alarms, lights, PLC input , data logger, flow control etc. Simply plug the supplied cable into the IEP on the controller or daisy chain to any other module used in the system. Three screw terminals (NO, NC and common) are supplied to connect the wire that leads to the receiving end of this dry contact. No wire is supplied, 16-22 AWG wire is required.