1、Convenient wiring, thick red wire for the positive pole of the power supply, thick black wire for the negative pole 2、The thick blue line is the positive pole of the motor, and the thick green line is the negative pole of the motor 3、The advantage of using pulse width modulation (PWM) for dimming/speed regulation is that the energy of the power supply can be fully utilized and the circuit efficiency is high 4、The motor control board can adjust the motor speed through the potentiometer; it supports clockwise/counterclockwise rotation adjustment 5、Can be used for brush motor speed control, dimming adjustment, etc. in DC circuits Item Type: Motor Governor Material: Aluminum Alloy Input Voltage: DC9-60V Maximum Current: 20A Continuous Power: 1200W Speed Regulation Type: Current Regulation Speed Adjustment Range: 0-100%, Working Frequency: 25KHZ, Support Forward and Reverse Rotation Purpose: DC Motor Driver Can Be Used for Brush Motor Speed Adjustment, Dimming Adjustment, Etc. in DC Circuits 1 x Motor Governor Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia