DROK 24W Car Boost Converter DC-DC Waterproof Step Up Voltage Converter 2A Power Supply Regulator Transformer Module 5-11V to 12V for Radio LED Lighting Electric Fan Adopting synchronous rectification technology, high conversion efficiency of over 93 percent 5-11V wide input Voltage ranged, output Voltage is 12V, output power is 24W and output current is 2A Solidly Made, waterproof and Shockproof, durable, with 4 wires, easy to wire them up Input transient high Voltage protection, output over current protection, chip overheating protection Commonly used for solar energy, radio, car alarm, LED display screen, electric fan and so on