Accurately control the speed of any common DC motor rated up to 100V (<7A). Operates on 5V to 15V. Uses NE556 to pulse-width modulate an IRF530 MOSFET. In this way motor torque is maintained. Adjustable speed control. Box mounted. This is a KITand needs ot be assembled. This KIT requires the buyer to have basic soldering skills and they are only returnable if they are still in their original packaging.