Features: _x000D_1. Designed with a LED Digital Display panel for easy reading and convenient setting of speed adjustment._x000D_2. Can set the slow start and slow stop time of DC motor._x000D_3. The maximum and minimum speed of the motor can be adjusted, and the speed increase can be set._x000D_4. This is a simple and easy-to-use DC motor speed controller of small size, stable performance._x000D_5. Easy to operate, can reduce the mechanical stress on the motor and shaft._x000D_6. Suitable for DC brush motor speed control._x000D__x000D_Specification:_x000D_Condition: 100% Brand New_x000D_Item Type: Motor Speed Controller_x000D_Input Voltage: DC 9-60V _x000D_Output Voltage: Linear Under Load_x000D_Output Current: 30A_x000D_Continuous Current: 20A_x000D_Speed Range: 0%--100% _x000D_Control Frequency: 21Khz_x000D_Speed Control Mode: Button_x000D_Digital Positioning: 0-100 (Percentage)_x000D_Wiring Type: Wire_x000D_Support Motor: DC Brush Motor_x000D__x000D_Package List:_x000D_1 * Motor Speed Controller_x000D__x000D_Function panel description:_x000D_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._x000D_2. Slow stop time setting Range: 000 - 100 Slow stop time is adjustable between 0-10 seconds, the default is 1 second._x000D_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._x000D_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%._x000D_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%._x000D__x000D_Wiring Method: _x000D_NO Color Signal _x000D_1 Red Power + _x000D_2 Black Power - _x000D_3 Blue Motor + _x000D_4 Green Motor - 1Designed with a LED Digital Display panel for easy reading and convenient setting of speed adjustment. 2Can set the slow start and slow stop time of DC motor. 3The maximum and minimum speed of the motor can be adjusted, and the speed increase can be set. 4This is a simple and easy-to-use DC motor speed controller of small size, stable performance. 5Easy to operate, can reduce the mechanical stress on the motor and shaft.