DROK Buck Power Converter, Waterproof DC-DC 30-60V 36V/48V to 12V Non-Isolated Synchronous Buck Power Converter Regulator Volt Power Supply Module for Automotive Electric Fan Voltage range: DROK Buck converter input voltage is DC 48V (30-60v), output voltage is DC 12v0.25 Output current: The voltage regulator output current is 25A (it is recommended that below 20A for a long term operating). Special design: the step down transformer adopts aluminum shell and embedding technology, with waterproof, shockproof features, can be applied to various poor environment. Simple wiring: red wire: input+, black wire: input-; yellow wire: output+, black wire: output-. Various application: electric motor, audio equipment, GPS navigator, air conditioner, electric Fan and etc.