1、This motor control module is commonly used in DC 12V, 24V, 36V, 48V, so it's very practical for various motors. 2、The PMW speed control module can quickly turn the speed from zero to it's maximum speed with high efficiency. 3、Under good heat dissipation, the motor speed switch has a 20A maximum current for more accurate speed control. 4、Adopting high quality material, the motor speed regulator enables stable working and long service life as well. 5、Has a compact size and a light weight, which add more flexibility and convenience to the installation. 1 x Motor Speed Controller1 x Knob Hat1 x Knob Nut Piece Item Type: Motor Speed ControllerProduct Material: ResinProduct Size: Approx. 77 x 45mm / 3 x 1.8inWorking Voltage: DC 10V-60V (universal)Output Current: 0 ~ 20AContinuous Power: Maximum 1200WSpeed Range: Motor zero speed to motor maximum speedMaximum Current: 20A (under good heat dissipation)Pulse Width Modulation Frequency: 16 Hz