ITEM NAME:hot12V 24V 20A Max PWM DC Motor Stepless Variable Speed Controller 25kHz EAU.Product list: PWM DC motor stepless speed change 1. PWM frequency: 25kHz. Applicable current: rated current 10A, maximum current 20A. Suitable for the DC motor (or DC load) within 20A. Adjustable speed range is from 0%-100%.