Waterproof DC Buck Converter Voltage Regulator 8-22V to 3-15V 5V 12V 3A Adjustable Output Power Supply Transformer Step-Down Volt Module Board for Car Auto Vehicle Motor Regulated SR

Utilizes synchronous rectification technology for high conversion efficiency and stable performance. The input voltage must be at least 3 volts higher than the output. Features a bottom-mounted potentiometer for fine adjustment using a small screw, while ensuring the setting stays secure after installation. Fully enclosed with an outer casing that serves as a heat sink. Designed to be waterproof, shock-resistant, humidity-resistant, and dust-proof for improved durability. Equipped with reverse-connection, over-current, over-heat, and over-voltage protection for safe operation. Suitable for a wide range of electronic hobby projects and applications, such as radios, car audio systems, LED displays, motors, and cell phones