This Lionel Postwar RCS controller is a great addition to any model railroad setup. It comes with features such as the Uncouple/UNLOAD controller, which makes it easy to separate cars and unload cargo. The controller is designed to work with 3-Rail-2-Conductor rail systems and has a power type of DC. The gauge of the controller is O-27 and it is made of pressed steel and plastic materials. The controller is in good working condition and is perfect for any model train enthusiast.