1. Real-time detection of the state of charge of the appliance, voltage, current, power and other indicators. The tester is widely used in the quality inspection of 3C digital and peripheral products of Type-C interface.It is the first choice for electronics enthusiasts2. It adopts 0.96 inch IPS high-definition color liquid crystal display, which can be connected in two directions, 160 degree wide viewing angle, high brightness and long working life. Support the identification of QC2.0, QC3.0, PD, SAMSUNG quick charge protocol3. Internal use of professional instrument sampling circuit, coupled with unique precision algorithm, ensures the accuracy and stability of the product at the hardware and software level4. With power-off storage function, when the mobile power is cut off, it can store capacity and energy data, which is convenient for subsequent viewing, and is convenient for measuring the energy capacity of the mobile power source5. Can help us clearly understand the load resistance and current discharge power, and better understand the range of use of the load. Note:1.Our product screen has a protective film, tear off the protective film, our product screen is brand new.2.When using type-C PD fast charging, you need to connect the plugs at both ends for the machine to work. The screen will not work when only one end of the plug is connected.Directions for use1. Click the button to switch the LED screen. 2. Double click the button to revolve the LED screen3. Long press the button for 3 seconds to remove all of data. 4. Charging sign : the color and speed of arrow change as the current. When current changes from low to high, the color changes from green to yellow to orange to red, the speed of arrow changes from slow to fast.No current , no sign.5. Current and voltage calibration method: Please use 5V standard voltage . Hold the button until \