DC Motor Controller, Yeeco DC 10-40V 10A 12V 24V 36V DC Motor Speed Controller, PWM Stepless Motor Control, Variable Speed Control Generator with Reverse Polarity Protection Yeeco DC motor controller adopts imported filtering capacitance, field effect power transistor, specified motor speed regulation drive IC and 1.6mm FR-4 double-sided circuit board Potentiometer you can adjust power supply output High efficiency, small heating,widely used in the industrial production The board can control motor speed to change between 10% to 100% With Power supply reverse polarity protection and high current protection