It is a 530W Step Down Converter/Voltage Regulator/Car Adapter, Input voltage: DC 48V (wide voltage range: DC30~60V, adjustable), Output voltage: DC 24V(non-adjustable), Output current: 22A, It has small size, high efficiency, long term stable and reliable quality,easy installation and use. Application: Wide application electric motor, audio equipment, GPS navigator, air conditioner, electric fan, LED lights, LED vehicle display, solar battery and other industrial electric.