ITEM NAME:1 x 12V 24V Max 20A PWM DC Motor Stepless Variable Speed Control Controller Hot Descriptio n Description: 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 Specifications: material: metal Color: silver PWM frequency: 25kHz Input power supply voltage: 9V-60VDC Applicable current: rated current 10A, maximum current 20A Package Included: PWM DC motor stepless speed change*1 Whatever the ending's perfect or not, you can't disappear from my world 1 x 12V 24V Max 20A PWM DC Motor Stepless Variable Speed Control Controller Hot.PWM DC motor stepless speed change 1. Suitable for the DC motor (or DC load) within 20A. Applicable current: rated current 10A, maximum current 20A. PWM frequency: 25kHz. Adjustable speed range is from 0%-100%.