RUNCCI-YUN PWM Speed Controller, Dimmer 6V 12V 24V DC 3A DC Motor Speed Controll
Colour Pwm&forward Reverse Switc. ★ PWM frequency: 21 kHz; Duty cycle adjustable: 0% -100%. The maximum continuous output current: 3A. ★ Press the green button, the motor will run backwards; and release the button, the motor will stop.