Control the speed of a DC motor with this controller. Control the light of a lamp with this controller. High efficiency, high torque, high power, high heat dissipation. With overcurrent protection. The high quality improve the stability of circuit. 100% and high quality Input voltage: DC12V - 36V Sustained current:3A,max. 6A(Need to add a cooling fan when max. current) PWM Duty Cycle:0 -100% Material: Plastic, metal Size (L*W*H):55mm*35mm*21mm Package includes:1 x PWM DC Motor Speed Regulator Controller Switch Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.