W Single Track Walkabout ControllerSingle track controller designed to allow the operator to control the layout away from the control panel. This controller has a rotating dial to control the speed of one locomotive and a DPDT switch on the circuit to control the direction of travel, you can also switch it to the center position to cut off the power to the track. This controller does not come with a transformer so you will need to use a 16v AC supply which can be applied by wiring the