Features The upper limit and lower limit of the speed can be set, change the speed by buttons rather than the potentiometers that is easy to damage. Backlight LCD screen displays working time and 0-100% speed percentage. Can set run time and stop time, repeatedly and automatically cycle run and stop. Can set slow run/stop time and automatic run/stop times. Can set the total working time, the motor stops when the time is up. Specification: Item Type: DC Motor Speed Controller Input Voltage: DC6.5V-55V (the specific voltage must be equal to the rated voltage of the motor) Output Voltage: Linear under load Instantaneous Current: 30A Continuous Current: ≤20A Speed Regulation Type: Current Regulation Speed Adjustment Method: Jog + - Wireless Remote Control: Not supported Timing: Yes Slow Run Slow Stop: Can be set Speed Digital Display: 0-100 percentage Speed Range: 0-100% Control Frequency: 15KHZ Connection Type: Fence type terminal Support Motor: Brush Motor Module Size: 116x76x30mm / 4.57x2.99x1.18in Mounting Size: 109x70mm / 4.29x2.76in Installation Method: Panel type Package List: 1 x Motor Speed Controller Note: The input positive negative pole must be connected correctly. The input voltage(6.5V-55V) must be equal to the rated voltage of the motor. Package List 1 x Motor Speed Controller