Description: 1. The motor speed controller regulates the speed of a DC motor through pulse width modulation adjustment. 2. The direction (forward or reverse) and stopping of the motor are controlled using a push button switch. 3. Press the green button to reverse the motor; releasing the button will stop the motor. 4. Press the red button to rotate the motor in a clockwise direction; releasing the button will stop the motor. Features: 1. Input power voltage: 6V - 24V DC 2. PWM frequency: 21kHz 3. Duty cycle adjustable: 0% - 100% 4. Rated current: 30A 5. Potentiometer with switching function 6. The three-digit LED display ranges from 000 to 100 (for example, a display of 055 indicates a 55% PWM output duty cycle) 7. Product dimensions: 57*37*21mm Package includes: 1 motor speed controller