The Tech II Series introduces Proportional Tracking Control (PTC) to MRC's durable, feature-rich line of power packs. PTC provides instant response from locomotives throughout their entire speed range and automatically adjusts pulse characteristics to match the locomotive's motor. The result is tighter, surer command of your trains.
 
A quality Tech II pack that offers big power for Lionel trains. Solid state design provides precise power control and responsiveness. Features overload indicator, automatic return whistle switch, 330° speed control handle and much more.