100.O Single Track Unit, Panel Mounted for O GaugeSingle track controller designed to sit inside a control panel. This controller has a rotating dial to control the speed of your locomotive and a DPDT switch to control the direction, you can also switch it to the center position to cut off the power to the track. TECHNICAL DETAILS INPUT 1 x 18v AC (GMC M2) or (GMC T2) both rated at 2. 5 Amps OUTPUT 1 x 14v DC Rated at 2. 5 Amps MEASUREMENTS WIDTH 70mm DEPTH 50mm HEIGHT 105mm GMC 100. O Instructions