Description: _x000D_ This is a simple and easy-to-use DC motor speed controller of small size, elegant appearance and stable performance. It is made with high quality circuit board which ensures a longer service life. The input voltage can be DC 12V to 80V and output voltage is 0-of the input voltage. This speed controller support soft start and soft stop, which is quite convenient to set. _x000D_ _x000D_ _x000D_ Features: _x000D_ Motor speed controller support soft start and soft stop, which reduces the mechanical stress on the motor and shaft. _x000D_ Designed with a digital display panel for easy reading and convenient setting of speed adjustment. _x000D_ DC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnt._x000D_ _x000D_ Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged. _x000D_ Suitable for 12V motors with power less than 50W, 24V motors with power less than 350W, and 48V motors with power less than 500W. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Input Voltage: DC 12V-80V _x000D_ Output Voltage: 0-of the input voltage _x000D_ Maximum Current: 30A _x000D_ Control Power: 12V 250W or less, 24V 350W or less, 48V 500W or less _x000D_ Speed range: 0~_x000D_ PWM frequency: 21kHz _x000D_ Controller Size: 110 x 77 x 36mm / 4.37 x 3.03 x 1.41" _x000D_ Panel Size: 92 x 69x x13mm / 3.62 x 2.71 x 0.51" _x000D_ _x000D_ _x000D_ Instruction: _x000D_ _x000D_ _x000D_ _x000D_ Set 1: "000"-"100", Slow start to speed time is adjustable between 0-10.0 seconds, the default is 1 second. _x000D_ Set 2: "000"-"100", Slow stop time is adjustable between 0-10.0 seconds, the default is 1 second. _x000D_ Set 3: "000"-"080", The minimum speed is adjustable from 0 to 80%, and is less than the maximum speed setting value, the default is 0. _x000D_ Set 4: "000"-"100", The maximum speed is adjustable between 0-, and is greater than the minimum speed setting value, the default is . _x000D_ Set 5: "000", "002" , "005" , "010" , "015", "020" , "025", The speed changes by 1%, 2%, 5%, 10%, 15%, 20%, 25% each time you press the up or down button. _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Speed Controller 1Motor speed controller support soft start and soft stop, which reduces the mechanical stress on the motor and shaft 2Designed with a digital display panel for easy reading and convenient setting of speed adjustment 3DC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnt 4Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged 5Suitable for 12V motors with power less than 50W, 24V motors with power less than 350W, and 48V motors with power less than 500W