Features:DC 10-55V MAX 60A CW CCW Reversible Switch PWM Motor Speed ControllerPerfect replacement for the old or damaged oneSupports large current startLED display 0~100% speed percentage, easy to readBuilt in heat dissipating fan, great for fast heat dissipationDurable and practical to usSpecifications:Input voltage:DC 10V~55VMaximum current:60AContinuous current:40ASpeed range:0%~100%Control frequency:15KHZSpeed regulation:Potentiometer (100k/with switch function)Speed Regulation Type Regulating CurrentReversible Switch:CW/CCWDigital Positioning:0-100 (percentage of full speed)Support Motor:DC brushWiring Type:Screw TerminalsWarm Tips:1.The digital display only shows 0-100%, which is the percentage of the full speed of the motor, not ihe actual speed of the motor2.The input voltage should be equal to the rated voltage of the motor3.Power supply input must be divided into positive and negativeSize:12.5x9x4.6cm/4.92x3.54x1.18inchNote:Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid.Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you!Package Includes:1x PWM Motor Speed Controller