With voltage gear and mode power-off memory function, it can also accurately display the current voltage value and load current value. This small device can support PD3.1/3.0 and is compatible with PD2.0 protocol. Qualcomm OC3.0/2.0, supports / fast charging protocol, etc.. By sending the fast charging protocol to the fast charging protocol Chargers or power and other equipment can induce 5V/9V/12V/15V/20V/28V fast charging The voltage comes out for aging and testing, as well as quality identification, computer and current power identification. The supported protocol fast charging voltage is as follows: Support PD3.1: 5V, 9V, 12V, 15V, 20V, 28V Supports PD protocol: 5V, 9V 12V 15V, 20V Supports QC protocols: 5V, 9V, 12V, 20V Supports protocol: 5V, 9V Supports protocol: 5V, 9V, 12V High-power aging PD power supply and QC power supply, PD protocol triggering can induce 5V/9V/12V/15/20V/28V Six fast charging voltages, the QC protocol trigger can induce four fast charging voltages of 5V/9V/12V/20V for Aging and testing and quality identification. Can also be used for aging Data detection can allow the charger to be used with high voltage for a long time by measuring the current and voltage to detect the stability of the charger. Note: Due to different production batches, there may be slight differences in products. Colour:Photo Color Material:PCB Package Contents: 1 x PQ31 voltage trigge 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.