ITEM NAME:DC5-35V 5A PWM DC Motor Speed Controller LED Light Dimmer Switch 10KHz(Pack W3S4 DC5-35V 5A PWM DC Motor Speed Controller LED Light Dimmer Switch 10KHz(Pack W3S4 Working voltage:DC5V-35V Control power:90W(maximum) Quiescent current:0.015A(standby state) PWM duty cycle:1%-100% PWM frequency:10khz color:red material:plastic Shell size:30MMx width 24MM(without handle) total height 15MM Package Contents: 1 x PWM DC motor speed controller.PWM duty cycle:1%-100%. PWM frequency:10khz. Shell size:30MMx width 24MM(without handle) total height 15MM.