Specification: 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 Adjustment Method: Jog + - Timing: Yes Speed Digital Display: 0-100 percentage Speed Range: 0-100% Control Frequency: 15KHZ Support Motor: Brush Motor Module Size: 148x95x36mm / 5.83x3.74x1.42in Mounting Size: 142x88mm / 5.59x3.46in 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 Package List: 1 x Motor Speed Controller Note: The 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.