This 6V–28V 3A PWM DC Motor Speed Controller allows you to smoothly regulate the speed of DC motors, fans, or adjust the brightness of LED strips using highly efficient Pulse Width Modulation (PWM). Featuring a dedicated aluminum heatsink for stable thermal performance, this module handles up to a 3A continuous current load. The integrated potentiometer knob includes a built-in switch function, allowing you to easily click the unit completely off to cut power.