The digital display 0-100 percentage table is accurate. Point move start / stop switch. Slow start time setting function 1: 000 - 100 Slow start to 100% Speed time adjustable between 0-10 seconds Default is 1 second. Slow stop time setting function 2: 000 - 100 Slow stop time is adjustable between 0-10 seconds Default is 1 second. Speed lower limit setting function 3: 000 - 080 The minimum speed is between 0-80% adjustable and less than the maximum speed setting The default is 0. Speed upper limit setting function 4: 000 - 100 The maximum speed is adjustable between 0-100% and the minimum speed setting The default is 100%. Acceleration and deceleration value setting Function 5: 001 002 005 010 015 020 025 Each time you the plus/minus key, the speed changes correspondingly by 1%, 2%, 5%, 10%, 15%, 20%, 25%. Note: The input voltage must be equal to the rated voltage of the motor. Input voltage:DC 6-60V Output voltage: Linear Output current: 0-30A Continuous current: 20A Speed regulation type: Regulating current Speed regulating mode: Potentiometer Speed range: 0 - 100% Control frequency: 21KHZ Type of wiring: terminal Colour:As shown Material:plastic Package Contents: 2 x Speed Controller (without retail package) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.