I had a little more time to look into this after dinner and I found one company that makes these in Brazil.

Here is a link to the showerhead with the tech specs. http://www.lorenzetti.com.br/ing/blinducha.htm

There appears to be an optional covered pipe from the wall to the head to route the wires in to keep them from getting exposed.

The tech specs say its compatable with a Residual Current Device which I guess is another name for a GFI.