Powerful DC Power SupplyWanptek APS305H is a three-window four-digit display with data storage and a program-controlled switch DC-regulated power supply which can display voltage current and power at the same time. They are widely used in mobile phone repair computer repair battery charging school teaching and production line use.USB Fast ChargeThe output voltage and output current can be continuously adjusted between 0 and the nominal value by using the coding potentiometer and the set value can be displayed in advance which is convenient for use and adjustment. This machine has a USB fast charging function and supports multiple fast charging protocols.Safe and Easy to UseWith perfect OVP and OCP short-circuit protection circuits this product also provides a host computer communication function (optional) which is convenient for users to remotely control PC computers and other main control devices through USB data lines. The stability and ripple factor of the power supply are very good. It is small in size beautiful in design and easy to operate.