Adjustable PWM Output DC Motor Speed Controller 8-40V 3.3A Product Name : DC Motor Speed Control Switch;Voltage : DC8-40V Current : 3.3A;Modulation Type : PWM Size : 8.5 x 3.8 x 2.8cm/3.35" x 1.5"x 1.1"(L*W*H);Material : Metal, Aluminum, PCB Color : Black, Silver Tone, Green, Copper Tone;Net Wieght : 72g Package Content : 1 x DC Motor Speed Control Switch