1: Connect a PD power supply to set the output voltage via the DIP switch. 2: Supports online hot-switch voltage range and fixed voltage range. 3: Supports backward compatibility with voltage ranges (e.g., if the setting is 28V and your charger's maximum voltage is 20V, the charger's 20V range will be used). 4: Supports forward and reverse detection and automatic switching of Type-C male connectors. This PD3.1 decoy is widely used in the R&D, production testing, and burn-in of PD adapters and USB PD power banks. It supports PD3.1, PD3.0, PD2.0, and QC2.0 fast charging protocols. It also supports dynamic voltage switching via a DIP switch: 28V, 20V, 15V, 12V, 9V, and 5V. Each voltage has an indicator light, allowing you to see the output voltage and automatically find the closest PD voltage. The factory default setting is 28V (if your charger only supports 20V, it will automatically decoy to 20V). The input uses a high-conductivity, high-quality Type-C female connector, and the output load uses a high-quality, high-current DC 5.5 x 2.5 male connector (the included solder pad allows you to solder wires to the load). This meets high current and power requirements (28V5A). 140W load capacity. Supports multiple fast charging protocols. 1: Integrated PD3.1 fast charging protocol 2: Integrated PD2.0/3.0 fast charging protocol 3: Integrated AFC fast charging protocol 4: Integrated FCP fast charging protocol 5: Integrated QC2.0/3.0 fast charging protocol 6: Automatic CC pin detection, supports Type-C plugging in either direction 7: Automatic fast charging protocol switching: Detection sequence: PD3.1-PD2.0-+QC-AFC-FCP Color: Black Material: PCB Package Contents: 1 * PD3.1 decoy 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.