Kelly KDZ programmable brushed series motor controller provides efficient, smooth and quiet controls for electrical vehicles like golf carts, electric motorcycles, fork lifts, as well as electric boats and industry motor speed control. Motor speed controller uses high power MOSFET, fast PWM to achieve efficiency 99% in most cases. Powerful microprocessor brings in comprehensive and precise control to brushed motor controllers. This programmable motor brushed controller also allows users to set parameters, conduct tests, and obtain diagnostic information quickly and easily.