QC2.0 QC3.0 Decoy Supports Both QC3.0/2.0 Protocols.It Can Realize Fixed Voltage Adjustment And 200mv Interval Voltage Adjustment.Maximum Support 3a Current. Voltage Can Be Adjusted By Key, 3.6-20V Adjustable Voltage range(Need Charging Head Support).Key Adjustment, Memory Function, Voltage Adjustment, Voltage AdjustableIt Is Recommended Not To Connect The Load During The Voltage Adjustment Process, In Order To Avoid Over-Voltage Burnout. It Will Automatically Memorize The Voltage After Adjustment, And Will Trick The Required Voltage When Powering Up Again.Description: 1. The QC2.0 Charging Protocol Stipulates That The Voltage Is A Fixed Value.2. The QC3.0 Charging Protocol Stipulates That The Voltage Can Be Adjusted In Intervals Of 200mv, And The Adjustment Range Is 3.6V~20V. Pressing The Left Button Means The Voltage Increases, Pressing The Right Button Means The Voltage Decreases. Press The Two Buttons At The Same Time For 3 Seconds To Switch The Charging Protocol.3. QC2.0 Mode: When Powering On, It Displays C2.0 (Indicating QC2.0 Mode), Then Displays The Decoy Voltage 5.0/9.0/12.0/20.0 (4 Fixed Voltages), And Then Displays "---" (Indicating Voltage Measurement Center) If The Charging Head Supports The Voltage That Needs To Be Adjusted, The Tricked Voltage Will Be Displayed; If The Charging Head Does Not Support The Voltage, "Err" Will Be Displayed, And Then The Current Voltage Will Be Displayed. Qc3.0 Mode: Power On And Display C3.0 (Indicating Qc3.0 Mode), And Then Display The Current Decoy Voltage. Press The Button To Adjust The Voltage. The Left Button Increases 200mv, The Right Button Decreases 200mv, 3.6~20v Is Adjustable.Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Usesize: about 48 x 18mmMaterial: PCBcolour: As shownPackage Contents:1 x Decoy ModuleOnly 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.