Features two independent Tech 7 units in one housing. It is designed to control two trains in different blocks with common rail. This dual unit not only has a total output of 20VA, but features that include revolutionary slow speed circuitry and Accutec Technology (TM). Other popular features include: Proportional Tracking Control, Automatic Circuit Protector, Advanced Slow Speed Circuitry, Main Line Direction Switch and Advanced Slow Speed Circuitry. Fixed AC terminals power switch machines, lights and other accessories. Indicator lights keep you informed of your layout status. The 300 degree throttle provides an extended range of control.