Check the listing for details. DC 6-90V 15A Motor Speed Controller Pulse Width Modulation Regulator with Fuse. Condition: New. Listed at 19.66 USD. What is this?The universal DC motor speed controller is suitable for DC 6-90V 15A pulse width modulation. It can easily provide a continuous current of 15A to your DC motor or other DC load. Effective to use for speed adjustment.What will I get?Overall Dimensions: 63x60x28mm/2.48x2.36x1.1 inch(L*W*H);Voltage: DC 6-90V;Maximum current: 15A;Potentiometer resistance: B100K;In the package of: 1 x DC motor speed controller.Are there any advantages of the product?The governor extremely high efficiency, torque, small heating. Equipped with power reverse connection protection, control voltage over voltage protection, 15A rapid ceramic fuse.How to use it?Steps of installation:1. Connect the voltage of 6-90v DC to the circuit.2. Then speed of the motor can then be controlled through the potentiometer.