Display the type of PD protocol at each power-on. PD protocol is not supported. Pd2.0: supports PD2.0 protocol. Pd3.0: supports PD3.0 protocol. How to switch the display content:In the operation interface, the K1 key briefly to switch the display voltage/current/alternate display; and hold the K1 key for 5 seconds to turn off the display of the digital tube and indicator light, and any key to wake up. How to adjust the voltage gear:1. In the operation interface, the K2 button briefly to enter the voltage adjustment interface, and the voltage flash after the digital tube displays the current gear; 2. At this time, it is modified by pressing the K2/K1 key (K2 is for upshift and K1 is for downshift). When shifting gears, "p7 -1" (p7: supporting 7 voltage gears in total,-1: indicating the serial number of the current voltage gear) be displayed first, and then the voltage value of the current gear be displayed; If the current voltage gear supports step-by-step voltage regulation, gear indicator (20mv 100mv 1v) be fully lit; 3. 5s Without any key operation or long pressing K1 key 2S, it automatically return to the running interface; Note: the last gear of "P7-L", gear "L", is triggered by turns. After selecting gear L and returning to the operation interface, all supported gears be triggered by turns (5V/9V/12V/15V/20V/ mode). In this mode, the stepping voltage indicator light in the operation interface be indicated by the marquee mode; This function can be used for batch measurement of charging head manufacturers. This product has power-off memory function. Remember the voltage gear and PD mode before power-off when you power up next time. Color: Black Material: Metal Package Contents: 1set x tester accessories 1 x data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.