Input:12-75V Output:2.5-50V adjustable Current:25A (MAX) Efficiency:95percent maximum (the smaller the pressure difference, the higher the efficiency) Wiring:High power situation, wiring as thick as possible. Name:DC-DC adjustable buck module Voltage conversion at a glance: 12-75V to 5V 12-75V to 9V 14-75V to 12V 17-75V to 14.8V 19-75V to 16.8V 22-75V to 1 9V 24-75V to 21V 28-75V to 24V 35-75V to 30V 41-75V to 36V 48-75V to 42V 55-75V to 48V INand:Input positive VADJ: Output voltage regulation 0UTand: positive output IN-: Input Negative Clockwise large Counterclockwise small OUT-: output negative Note:Charge batteries, batteries, output please add your own diode to prevent reverse irrigation! Different factory batches may have slight differences in appearance, which not affect the use. Colour:As Shown Material:PlasticandMetal Package Contents: 1 x DC Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.