Features 【High quality material】: Speed controller is made with high quality circuit board which ensures a longer service life. 【High performance】: This simple and easy-to-use DC motor speed controller has a stable performance. 【Function】: Comes with a momentary start/stop switch and a speed control potentiometer. 【Professional design】: Designed with a digital display that shows the rate in percentage of actual speed to maximum speed. 【Easy to use】: This motor speed controller uses screw terminals for convenient and quick wiring. Description: Features: Speed controller is made with high quality 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/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: 0A-30A Continuous Current: 20A Speed Range: 0% to 100% Regulation Method: Potentiometer Regulation Type: Regulating Current Control Frequency: 15KHz Wiring Type: Screw terminal Package Includes: 1 x Speed Controller Note: Please allow small size error due to manual measurement. Thanks for your understanding. Package List