I'm afraid that the Postman Always Rings Twice!

But what has bothered me immediately is the ringing. I think you can choose between
Select three warning signals. All very artificial / mechanical / cheap to listening clay mixtures.
Not one of them is "more quiet".

The device should draw attention to themselves when someone rings, right. But my previous intercom
has done it with a non-audible, yet pleasant melody.

What bothers me as an energy saver still: It is permanently illuminated a small, yellow light in the button for electronic door opening. If
the bell is silent, an additional red light will come on.