A motor controller is a device that governs the predetermined performance of an electric motor. They are intended for use with motors in motion control applications. Motor controllers operate by taking low current and low voltage input signal and driving a motor with higher voltages and currents. This gives them the ability to control actions such as starting or stopping a motor, selecting forward or reverse rotation, regulating speed, along with several other commands. Because all electric motors require some sort of controller, these devices have been designed to operate with differing features depending on the task that the motor will perform.