It is the control unit and supply source of Energy Saver Slot, magnetic door contact and Electronic DND System (Optional). It has relays in desired number and amperage values according to the project. In the standard relay unit, the lighting-socket output is 30A and the air conditioner output is 16A. The system should be delayed for 15 seconds so that the guest is not left in the dark while leaving the room. Compatible with VRVNRF systems. Closed type transformer does not oxidize. It is microprocessor controlled. It is voltage regulated. It is by-pass feature (in case of malfunction, it disables itself and prevents the room from being without electricity). Current paths and terminal values are capable of carrying the maximum current. It attaches to the room's fuse board and should engage the rail.
In special production models, there may be an entrance lighting (spot, etc.) outlet to welcome the guest to a bright environment at the entrance of the room. A relay can be added for the bathroom ventilation fan to run for a few minutes after pulling out the card while leaving the room. Electronic DND control from inside the room can be done with push switches. In case of using a suitable light switch, DND functions (DND, MUR etc.) can be made from more than one point (for example, both the room entrance and the bedside). The lighting-socket output can be switched on and off with a master-off push switch.