Tech 7 ampac 760 Power Pack (Multiple Gauge)•Proportional tracking control yields the most responsive and realistic train operation; 300 degree throttle for extended range control •Indicator lights for momentum, power output and overload conditions; Automatic circuit protector disconnects power to the track if an overload occurs •Main line direction switch allows you to reverse your direction •Fixed A.C. terminals for powering switch machines, lights and other accessories •More powerful than others in its class with the ability to pull heavy loads and operate accessories