Tenshodo Quantum System Equipped D51 Steam Locomotive Semi-Streamlined 【71001】 Running is smooth. Lights are on. Quantum system is in good working order. Number plates are attached, and the rest are included. Other parts are unused. The instruction manual is a copy. Traditionally, a Quantum plate is not included with this product, but a copy will be provided. What is the Quantum System...? It's a system that allows you to control gimmicks like sound and lights, which previously could only be operated with DCC (Digital Command Control) or a dedicated system, even with a conventional analog power pack. Not only do the lights turn on from a stopped state, but you can also sound the whistle at will. The Quantum system is of course, operational with DCC at vehicle address "3", and the address can also be changed with DCC. Even without the above controller, it is operational with a "pure DC controller", although functionality will be limited. ※※ When using, please use a "pure DC controller" ※※ If a PWM controller is used, the Quantum board may be damaged. Examples: "KATO Standard S" OK "Tenshodo TS-1" OK "KATO Hyper D" NG "KATO Standard SX" NG Vehicle Type...Locomotive Type...Steam Vehicle Name...D51