ITEM NAME:12V 24V 20A Max PWM DC Motor Stepless Variable Speed Controller 25kHz RCA Descriptio n material: metal Color: silver PWM frequency: 25kHz Input power supply voltage: 9V-60VDC Applicable current: rated current 10A, maximum current 20A Product list: PWM DC motor stepless speed change*1 Features: CCM5S DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM) Suitable for the DC motor (or DC load) within 20A Adjustable speed range is from 0%-100% Potentiometer with adjust speed swtich function,and button swtich function The item with metal shell and connective label,very easy to install and use We offer you what you need! BI02854A1.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%.