Features: Speed controller is made with circuit board which ensures a longer service life. This simple and easy-to-use DC motor speed controller has an stable performance. Designed with a digital display that shows the rate in percentage of actual speed to maximum speed. This motor speed controller uses screw terminals for convenient and quick wiring. Comes with a momentary start or stop switch and a speed control potentiometer. Specifications: Input Voltage Range: DC6V-60V (input voltage should be same as motor rated voltage) Output Voltage: Linear with load Output Current: 30A Continuous Current: 20A Speed Range: 0 percent to Regulation Method: Potentiometer Regulation Type: Regulating Current Control Frequency: 15KHz Wiring Type: Screw terminal Package Includes: 1 x Speed Controller Note: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. The digital tube only displays 0-100 motor full speed percentage, not the actual motor speed. For example, if the maximum motor speed is 500 rpm, it will display 100 at 500 rpm and 50 at 250 rpm. Package List 1Speed controller is made with circuit board which ensures a longer service life 2This simple and easytouse DC motor speed controller has an stable performance 3Designed with a digital display that shows the rate in percentage of actual speed to maximum speed 4This motor speed controller uses screw terminals for convenient and quick wiring 5Comes with a momentary start or stop switch and a speed control potentiometer Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.