SLEEK DESIGN: This is a simple and easy-to-use DC motor speed controller featuring a compact size, elegant appearance, and stable performance. This speed controller has a refined and practical case that is waterproof, allowing for outdoor use. CONVENIENT WIRING: Comes with a screw terminal and a label indicating power and motor electrodes for easy wiring. The DC motor controller input is connected to direct current; do not connect to alternating current, or it will be damaged. LONG-LASTING: Made with a high-quality circuit board ensuring a long service life. The input voltage can range from 10V to 60V, and the output voltage is between 0 and 100% of the input voltage. This speed controller is very convenient to adjust. Ensure that the positive and negative polarities are connected correctly; otherwise, the controller will be damaged. Suitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc.