ITEM NAME:Digital Step Up Power Supply Module Boost DC-DC Voltage Regulator New Hot Descriptio n Description: Features: 100% brand new and high quality. This is a great DC to DC step-up power supply module for electric equipment, digital products, etc. Input and output are designed with screw terminals for convenient wire connection and disconnection. There is a heat sink on board that would ensure a better heat dissipation. It can also be used as a power supply for laptops or voltage regulator for solar panels. Instructions for use: 1: Connect the power supply (4.5-40V), the input indicator light, the module is working properly . 2: Adjust the blue potentiometer knob, Clockwise, step up , Counterclockwise, buck , ) With universal test, 3: If the input and output voltages are the same , Please rotate a few laps counterclockwise and then use it normally! Specifications: Input voltage: 4.5-40V Output voltage: 5-45V Input current: max. 5A Notice: 1: The output voltage is greater than the input voltage before it can be used! 2: The current can not be greater than 5A 3: The input voltage can not be less than 4.5V Package Included: 1 *Â Digital Step Up Power Supply Module Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ Digital Step Up Power Supply Module Boost DC-DC Voltage Regulator New Hot.There is a heat sink on board that would ensure a better heat dissipation. We'd like to settle any problem in a friendly manner. Input current: max. We want to make sure you are happy with our item.