The single-gang IRStation eliminates hand wiring an IR system. Although hand wiring can create good connections, if a component is damaged or interference occurs, every wire must be disconnected, everything tested and then carefully rebuilt. Good system design includes foresight...someday, something might go wrong. With the addition of the IRStation, connections are made quickly and simply with built-in screw down connectors and plug in terminals. Better yet, if something is wrong, troubleshooting LEDs quickly lead to the solution. 12 VDC power supply included.