Features:Adopts 12864 graphical display, large Information content.High quality dc-dc module with transparent shell, ultra stable for use.Over temperature protection, overload protection and over pressure protection.Display the voltage, current, power, capacity and time.With analog display.Wide input voltage for various use in different environment.Strong loading capacity, can work for a long time with high current.Up to 9 capacity records.Single button operation, short press the screen for rotating 180, fitting for use in different directions.