Has anyone converted a Prestina to auto fill? Where would you locate the probe?
Do you tap the sight tube fitting or the boiler lid? That stud directly above the sight fitting seems prohibitive.
I have the Prestina and a fill valve that has a manual section and a solenoid section.
The plumbing is simple and the mount will be easy but there seems no good location for the probe.

David:

I think they would have seen machines fitted this way on Kaffee-Netz. If you search Prestina there you will probably come up with photos.

https://www.kaffee-netz.de/

Also search Home-Barista for Prestina autofill. More than one thread showed in the search, including this one, which may give you clues.

Conti Prestina, The Netherlands