Arduino-Port-Expander Problem with Analog and Digital Inputs

ESPHome
2

I have found new Informations.

If Relay is off, the Digital Out of the Arduino does have 5V → correct.
If Relay is on, the Digital Out of the Arduino does have 0V → correct.
If Relay is no the same Number, as the Analog Sensor (A3 And D3) and is on, the Digital Out of the Arduino does have ~ 3V → not correct.

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