DROK DC-DC Auto Car Power Supply 12V to 5V Buck Converter Output 3A/15W Set-down Voltage Regulator Reducer Power Module Converter Adopting synchronous rectification technology, non-isolated buck converter module. Input voltage is DC 12V (8V-20V), Output voltage is DC 5V, converting 12V to 5V. Its current output is 3A 15W Max with a high conversion rate of 90%, 4 wires, easy to wire up. Attractive for its protection for overheat, reverse connection and short circuit. It can work for car stereos, radios, monitors, LED displays, children's car, LCD TV and etc.