TOMIX N gauge TCS Power Unit N-DU101-CL 5517 Model Railroad Supplies Power-on tested Instructions included Ultimately, it was never used, so it's unused. The box has some stains due to aging. A new pulse control power unit that simulates the 1-handle control panel common in recent trains. The design is based on the control panels often seen in modern trains. 8-step variable one-handle type: 3 acceleration steps, constant speed (neutral), 3 deceleration steps, and emergency stop. LED displays the step position. Pulse control system. Equipped with constant lighting (CL) function. Side connector for Point Control Box N included. TCS output terminal included. Easy connection with connectors for feeder, TCS output, etc. One feeder output system.