Support QC2.0 QC3.0 protocol, read all voltage of fast charging charger. Support PD3.0 PPS voltage, automatically read all voltages when powered onSupport for FCP SCP SSCP automatic identification super fast charge all voltages. Before the test, please press the protocol setting table on the board, set the position of the DIP switch, and then start the test corresponding to the protocol that should be tested.Test QC3.0+, set the DIP switch at 0011 position; 3.6-20V voltage, voltage step every 20MV when on. The USB socket can be connected to the load and display the current.PD3.0 test: DIP switch is set to "1010" position:For FCP fast charging protocol test: DIP switch is set to "0111" positionFor FCP fast charging protocol test: read 9V2A.For SSCP protocol test: set the DIP switch at the "1001" position, select the SSCP protocol charging head, read 10V-4A super fast charge 40W.Different batches Product appearance, color and printing fonts may vary and do not affect useMaterial: PCBcolour: redPackage Contents:1 x Tester BoardOnly 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.