Lets you run locos as DC or DCCFor DC only operation use the dummy plug with either DNWH or DNWHPSFor DCC operation remove the DNDP and replace with a decoder5-Pack
For use with Digitrax Decoders Equipped with 6 pin Function Harness8 ohm 10x18 mm Oval speaker included.Keeps locos running during intermittent power interruptions resulting from dirty or bad track.0...