A good case where design really does matter. These things stick out like sore thumbs. Good museum labels blend. They certainly don't look like old thermostats.

I can't imagine most museum curators would dare to put these on their walls.

And anyway — why constrain all information to a single display. If the goal is to get more information about a painting to a view, there are more solutions both more efficient and kinder to the patrons.

This feels like a case where a simple (dare I say it?!) QR code would have much longer, smarter legs.