Maximum output current: 2A Input voltage: 2V-24V Maximum output voltage: 28V Efficiency: 93% Method of use: The module of the IN+ and - after 2-24v, IN adjusting the potentiometer can adjust output voltage, output voltage is the input voltage. Note: 1). Input voltage should not exceed the maximum input voltage. 2). current output current does not exceed 2A. 3). When the module to adjust the output voltage may not always match the input voltage, please counterclockwise the potentiometer for more than 20 laps, and then use the module may be normal to adjust the voltage. Method of regulation: potentiometer on the front side of the chest, reverse clock amplifier! Note:Due to different production batches, the appearance is different, which does not affect the use. Specification:Micro-USB interface Colour:Blue Material:Metal+Plastic Package Contents: 10 * Adjustable Step Up 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.