Motor speed controller input voltage range is 9-60V, output current range is 0-20A, continuous power is 1200W. The dc motor driver can be used to brush motor speed regulation, light dimming regulation in the DC circuit. Note: The motor cannot be used in electric vehicles. Motor control board can regulate motor speed by potentiometer; what's more, it support clockwise/anticlock-wise rotation adjustment. Thick red wire for the positive of the power supply, and thick balck for the negative; thick blue wire for the motor positive, and the thick green for the motor negative. The advantage of using a pulse width modulation (PWM) method for dimming / speed regulation is that the energy of the power supply can be fully utilized and the circuit is highly efficient. BOJACK Specifiction for Motor Speed Controller

Control frequency: 25KHz clockwise / counterclockwise rotation; support Fit motor
DC brush size: 92x52x36mm
Product net weight: 155 grams
Wiring connection: thick red line: power +, thick black line: power -, blue and green motor is not positive or negative
Potentiometer mounting hole diameter: 7mm
Input voltage range: DC 9-60V output voltage
Linear load output current: 0-20A
Continuous power: 1200W
Speed control mode: potentiometer (linear)
Speed range: 0-100%
Continuous current: within 18A
The input voltage should be equal to the rated voltage of the motor
Includes: 1x DC motor controller
Note: The motor cannot be used in electric vehicles.