DC 5V-35V 5A 20khz LED PWM DC Motor Controller Speed Regulation Dimmer Features: Mini DC 3-35V 5A PWM Motor Speed Controller. Wide voltage DC motor speed controller, PWM duty cycle: 1{7e82c6d62784066d1b113f595afb6e15f0ca3fec289cddd29e600df910d44428} -100{7e82c6d62784066d1b113f595afb6e15f0ca3fec289cddd29e600df910d44428}. Mini Style DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM). Default disconnection of short circuit point, suitable for 5-35V input. Manually connect the short circuit point according your needs, suitable for low power 3-15v input. By screwing the potentiometer, you can turn off power supply output. High voltage and high current resettable fuse, overcurrent automatic disconnection, power off for cooling for a few seconds fuses automatic recovery. Precautions: DC motor governor input is DC, can not directly connected to the AC (for example: home 220V AC), otherwise it will burn! DC power supply positive and negative terminals do not reverse, otherwise the governor may be damaged. The motor can be positive or negative, when the direction of operation and expectations do not match, you can adjust the line order to change the direction. Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes. Size: 30mm x 26mm x 14mm (Without Handle) Package Includes: 1 x 5V-35V Speed Control Switch