1Backlight LCD screen displays working time and 0-100% speed percentage. 2Come with a remoter controller. 3Can set slow run/stop time, upper limit and lower limit of the speed. 4Can set run time and stop time, repeatedly and automatically cycle run and stop. 5Set the motor speed by the buttons rather than the potentiometers that is easy to damage.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: Support Remote Control Battery: CR2032 button battery 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 Supported Motor: Brush Motor Module Size: 116x76x30mm / 4.57x2.99x1.18in Mounting Size: 109x70mm / 4.29x2.76in Installation Method: Embedded Function: 1-2-3-4-5-6-7-8-9 function settings are as follows: Slow Run Time Setting Function 1: 000-100, slow start to 100% speed, adjustable time 0-10s, default is 1s. Slow Run Time Setting Function 2: 000-100, slow stop, adjustable time 0-10s, default is 1s. Speed Lower Limit Setting Function 3: 000-080, adjustable minimum speed 0-80% and less than the maximum speed setting value, default is 0. Speed Upper Limit Setting Function 4: 000-100, adjustable maximum speed 0-100% and greater than the minimum speed setting value, default is 100%. Acceleration/Deceleration Value Setting Function 5: 001 002 005 010 015 020 025, Each time the key increase/reduce is pressed, the speed changes by 1%, 2%, 5%, 10%, 15%, 20%, 25%. Motor Run Time Setting Function 6: 1s to 99h 59min 59s, default is 99h 59min 59s. Motor Stop Time Setting Function 7: 1s to 99h 59min 59s, default is 99h 59min 59s. Cycle Times Of Motor Run Stop Function 8: Adjustable 1-999 times, default 999 times With/Without Timing Selection Function 9: 0: Without, 1: With, Default 1 With 1 x Motor Speed Controller1 x Remote Control