Fangrui Product Details 1.module : Non-isolation Booster 2.ectifier System:not Synchronous Rectifier 3.input Voltage:4.3v-32v 4.output Voltage: 5v-52v 5.incoming Current:4a(maximum) Colour:as The Picture Shows Fer Efficiency:(the Highest)normal Efficiency For Switching Frequency:400khz Output Ripple:50mv Load Regulation:0. Voltage Regulation:0. Operating Temperature:-40+85function Key: 1).short Press: Input/output Display Options 2).moderate Press: Enter The Fine-tuning State .increase Or Decrease The Offset (the Default Is 0), When The Voltage Display Inaccurate Use .short According To The Regulation, Long Press Or Long According To Restore 3).long Press: The State Of Low Power Consumption, The Digital Tube And The Lights Are Out, The Normal Work Of The Module. Click The Button Again To Restore. Normal Display Clockwise To Adjust Output Voltage: Clockwise----- Increasing Voltage Counterclockwise----reduce The Voltage Material: Metal Package Contents: 1 X Step-up Module Only The Above Package Cont