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 0-100% 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: 0-100% 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: 0~100% _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 100% 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 0-100%, and is greater than the minimum speed setting value, the default is 100%. _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