Check the listing for details. DC6V 12V 24V PWM DC motor speed controller forward and reverse switch controller. Condition: New. Listed at 7.96 USD. Description:1. DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM)2. Control the forward or reverse direction and the stop of DC motor by button switch.3. Press the green button, the motor reverses rotates; and release the button, the motor stops4. Press the red button, the motor clockwise rotates; and release the button, the motor stops Feature:1. Input supply voltage: 6V - 24V DC2. PWM frequency: 21kHz; 3. Duty Cycle adjustable: 0%-100%4. Current rating: 30A5. Potentiometer with switch function6. The display range of 3-digit LED display is "000"-"100". (For example, displayed "055", it means that the PWM output duty cycle is 55%.)7. Product Dimensions: 57 * 37 *21mm Package Included:1 x PWM Motor Speed Controller