Panel type press fit designs, supporting a wide voltages ranging from DC6V to DC60V, with a large current capacity The speed controller adopts screw terminals, easy to connection and use circuit board, good durability and wear resistance, ensuring long time use The adjustable motor controller is equipped with instantaneous Starting / Stop switches and a speed control potentiometer for convenience The motor speed controller is designing with digital display screen that shows the percentage of actual speed to largest speed for precise control