Features:1. Designed with a LED Digital Display panel for easy reading and convenient setting of speed adjustment.2. Can set the slow start and slow stop time of DC motor.3. The maximum and minimum speed of the motor can be adjusted, and the speed increase can be set.4. This is a simple and easy-to-use DC motor speed controller of small size, stable performance.5. Easy to operate, can reduce the mechanical stress on the motor and shaft.6. Suitable for DC brush motor speed control.Specification:Condition: 100% Brand NewItem Type: Motor Speed ControllerInput Voltage: DC 9-60V Output Voltage: Linear Under LoadOutput Current: 30AContinuous Current: 20ASpeed Range: 0%--100% Control Frequency: 21KhzSpeed Control Mode: ButtonDigital Positioning: 0-100 (Percentage)Wiring Type: WireSupport Motor: DC Brush MotorPackage List:1 * Motor Speed ControllerFunction panel description:1. Slow start time setting Range: 000 - 100 slow start to 100% speed time is adjustable between 0-10 seconds, the default is 1 second.2. Slow stop time setting Range: 000 - 100 Slow stop time is adjustable between 0-10 seconds, the default is 1 second.3. Speed lower limit setting Range: 000- 080 The minimum speed is adjustable between 0-80%, and is less than the maximum speed setting. The default is 0.4. Speed upper limit setting Range: 000- 100 The maximum speed is adjustable between 0-100% and is greater than the minimum speed setting. The default is 100%.5. Acceleration and deceleration value setting If the setting parameters are 001, 002, 005, 010, 015, 020, 025. Each time you press the plus or minus button, the speed changes by 1%, 2%, 5%, 10%, 15%, 20%, 25%.Wiring Method:NOColorSignal1 Red Power + 2BlackPower -3BlueMotor +4GreenMotor -