DC 6-60V 30A Adjustable LED Digital Motor Speed Regulator PWM DC Motor Speed Controller 12V 24V 36V 48V                     Features: Speed controller is made with high quality circuit board which ensures a longer service life.     This simple and easy-to-use DC motor speed controller has an stable performance.     The output current of this motor speed controller can be adjusted from 0A to 30A, and it is simple to set.     Designed with a digital display that shows the rate in percent of actual speed to maximum speed. This motor speed controller uses screw terminals for convenient and quick wiring.     The positive and negative pole of controller must be connected correctly, otherwise, the item might be burnt. The input voltage of controller is better to be same as rated voltage of motor.          Product parameters:     Input voltage: DC6-60V     Output voltage: linear under load     Output current: 0-30A     Continuous current: 20A     Speed control type: flow adjustment     Speed control mode: potentiometer     Speed range: 0 -     Control frequency: 15KHZ     Wiring type: fence terminal block     Knob line length: 15CM     Module size: 75MM x 56MM x 28MM     Note:the digital display is the percentage non-motor actual speed     Material: PCB     colour: green          Package Contents:     1 x DC motor speed controller          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.