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% brand new and high qualityInput voltage: DC12V - 36VSustained current:3A,max. 6A(Need to add a cooling fan when max. current)PWM Duty Cycle:0 -100%Material: Plastic, metalSize (L * W * H):55mm x 35mm x 21mmPackage Contents:1 x PWM DC Motor Speed Regulator Controller SwitchOnly the above package contents are included, no other products are included.Note: Light and different displays may cause the item color in the picture to be slightly different from the real color. Measurement tolerance is +/- 1-3cm.