1Backlight LCD screen displays working time, 0-100% speed percentage, current mode and forward/reverse status. 2Multiple limit modes are optional, can set the slow start and stop time. 3Can set upper limit and lower limit of the speed. 4Can set the total working time, the motor stops when the time is up. 5Support independent speed regulation of forward speed and reverse speed. 6Manual and automatic modes optional, the motor automatically rotate forward/reverse within the set time under automatic mode. 7Touch switch to switch forward and reverse status, jog acceleration and deceleration, solve the problem that the traditional potentiometer is easily damaged.Item Type: DC Motor Speed Controller Input Voltage: DC10-55V (the specific voltage must be equal to the rated voltage of the motor) Output Voltage: Linear under load Instantaneous Current: 60A Continuous Current: 40A Speed Regulation Type: Current Regulation Speed Adjustment Method: Jog + - Timing: Yes Limit Function: 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: 148x95x36mm / 5.83x3.74x1.42in Mounting Size: 142x88mm / 5.59x3.46in Installation Method: Embedded Function: 0-1-2-3-4-5-6-7-8-9 function settings are as follows: Manual Automatic Mode Selection Function 0: 1 is manual mode, 2 is automatic mode, default is manual mode. 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 Running Time Setting Function 6: 1s to 99h 59min 59s, default is 99h 59min 59s. The following functions 7-8-9 are time setting in automatic mode Forward Rotation Time Setting Function 7: 0s-99h, default is 10s Stop Time Setting Function 8: 0s-99h, default is 10s Reverse Rotation Time Setting Function 9: 0s-99h, default is 10s Limit Mode Selection Function E: E1: No limit, default is no limit E2: After pressing start, the motor rotates forward to the forward limit and stops. After pressing start again, the motor rotated reverse E3: After pressing start, the motor rotates forward to the forward limit, and then rotates reverse to the reverse limit, finally motor stops E4: After pressing start, the motor rotates forward to the forward limit, and then rotates reverse, cycle working 1 x Motor Speed ControllerThe input positive pole and negative pole must be connected correctly. The input voltage(10V-55V) must be equal to the rated voltage of the motor.