Features: PWM motor speed controller panel with accurate digital display in 0-100 percentage format. With button switch for Start&Stop. With 18cm long regulation knob. Panel design, easy to install. Support wide input voltage from DC 6V to 60V for more applications. Note: 1. The digital display is a percentage and not the actual speed of the motor. 2. Make sure the positive and negative terminal of input voltage is correct. 3. The input voltage must be equal to the rated voltage of the motor (within 6-60V). Specifications: Material: ABS Output current: 0-30A Input supply voltage: DC 6V-60V Speed range: 0 - 100% Speed regulation type: current Regulation method: potentiometer Control frequency: 15kHz Connection type: Fence terminal block Knob Cable length: 18cm Working Temperature: -45~85C Panel opening size: 92 * 56mm / 3.62 * 2.2in Item Size: 96*61*34mm / 3.77 * 2.4 * 1.33in Item Weight: 120g / 4.23oz Package Weight: 120g / 4.23oz Package Size: 96*61*34mm / 3.77 * 2.4 * 1.33in Packing List: 1 * Speed Controller