STYLISH APPEARANCE: This is a simple and easy-to-use DC motor speed controller with small size, elegant appearance and stable performance. This speed controller has a delicate and practical casing that is waterproof so that you can use it outdoors. CONVENIENT WIRING: Comes with a screw terminal block and a label showing power and motor electrodes for convenient wiring. The controller's DC motor input is connected to DC power, cannot be connected to AC power, otherwise it will burn out. LONG LIFE: Made with high-quality circuit boards that ensure long service life. longer service life The input voltage can be between 10V and 60V, and the output voltage is between 0 and 100% of the input voltage. This speed controller is very convenient to adjust. Make sure the positive and negative poles are connected correctly. ected, otherwise the controller will be damaged. Suitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc.