Video doorbell on which wall?

In my experience, you can easily use one with a battery, then it does not require power supply from the house.

A battery is a no-go for us; we don't want to bother with changing the battery, so only the wired version comes into question for us, and the doorbell should continue to use the existing acoustic chime so that we also have an acoustic chime in case of internet failure.

I didn't quite understand that. Do you mean "placing it directly in front of the DOOR ..."?

Sorry, I can hardly explain that, since the wall is only 30 cm deep and the electrician will certainly want to place the doorbell centered on the wall, if you want to stand directly in front of the doorbell (which many probably do automatically because they don’t know it has a 180-degree lens), you would be standing about 15 cm in front of the door by the time I open it.

Or am I seeing it wrong?

Another question, on which wall would you hang the outdoor light and at what height?

On the left or right side? Height 1.80 m or 2.00 m?

Sorry, I can hardly explain this, since the wall is only 30cm deep and the electrician will definitely want to place the doorbell centrally on the wall, if you want to stand directly in front of the doorbell (which many will probably do automatically because they don't know it's a 180-degree lens), you would be standing about 15cm in front of the door until I open. Or am I seeing this wrong?

I think netuser wanted the front facing on the projection and not sideways. PS: Just read again:

I would probably prefer the right side, as frontal on the projection.

apparently not or it should say:

I would probably prefer the right side, that is frontal on the projection.

Yes, now I finally understood that we are talking past each other.

According to the title, I assumed a "video DoorBELL," that is, a combination unit installed at the front of the protrusion in one piece.
You probably mean a camera separate from the doorbell, or am I completely missing the point?

By the way, I would personally also install the light on the front of the protrusion :)

wants to install the video intercom at 90 degrees to the door on the protrusion. That way, when you stand in front of the camera, you lean against the door with your left arm.

In the meantime, thanks to your previous hint, I have understood it too :)
In my opinion, however, that makes no sense :(

Then rather install it to the left of the door.

I once marked color dots on the drawing so that we can no longer talk past each other.

Netuser, your suggestion was the blue dot, did I understand that correctly?