HiLetgo 12V-40V 10A PWM DC Motor Speed Controller CVT Speed Switch Module Using imported high-power FET, the load current up to 10A With fuse, to prevent short-circuit high current, causing burnout protection With reverse power protection, to prevent damage to the module when the power is reversed Original 63V / 1000uF large capacitor, to ensure the stability of the module Potentiometers are equipped with nuts, you can use without adding other components