Description: -Input voltage: DC4-40V; Output voltage: DC1.25-36V -Output current: up to 8A (long-term use recommended 5A); Maximum power: 200W -Step-down chip: XL4016E1; Conversion efficiency: 94% -Voltage regulator potentiometer: counter-clockwise rotation voltage decreases, if the rotation of the copper column voltage has not changed, you can rotate 5-10 laps. -Every item have been reviewed critical before shipment carried out, please buy with no worries. Specification: Material: PCB Board Size: 61x40x29mm/2.40x1.57x1.14inch Package Includes: 1 Piece Step Down Module Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor