Characteristic: 1. The speed controller is made of high-quality circuit board, which ensures a longer lifespan 2. This simple and easy to use DC motor speed controller has stable operation 3. Designed with a digital display showing the percentage of actual speed up to maximum speed 4. This motor speed controller uses screw terminals for convenient and fast wiring 5. Includes instantaneous start or stop switch and speed control potentiometer Specification: Input voltage range: 6V-60V DC (input voltage should be the same as motor rated voltage) Output voltage: linear with load Output Current: 30A Continuous Current: 20A Speed Range: 0 percent to 100 percent Adjustment method: potentiometer Adjustment Type: Adjustment Current Control Frequency: 15 kHz Wiring Type: Screw Clamp List of packages: 1 x Speed Controller Note: 1. 2. The digital tube-shaped displays only a percentage of the full speed of the 0-100 motor, not the actual speed of the motor. For example, if the maximum speed of the motor is 500 rpm. or min, displays 100 at 500 rpm. or min and 50 at 250 rpm. double-sided printing (duplex): yes 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.