About this item Current Conversion: DC to DC Step-down Adjustable Voltage Input voltage range: 4~38VDC (Note: input voltage not exceeding 38V, Output voltage range: 1.25-36VDC adjustable. Output current: 0-5A, Output power: 75W) Conversion Efficiency: Up to 96%. Build In high efficiency XMLSEMI XL4015 DC-DC buck converter IC with an LED voltmeter. Package Includes: 2PCS Step-Down Adjustable Power Supply Module XL4015. Size: 6.54 x 4.53 x 0.83 inches.