Don't like em personally I prefer a mira excel or a mynell v8/3 mixer shower can't go wrong in my opinion
mixer different class of shower.
i do like the digital showers though.
Not sure what my new house has actually I havent checked it just has a button on the wall to turn it on and off and the outer ring lights up blue when it is on with a heat adjust dial around the outside it's only about the size of an ashtray and connects directly onto the riser rail so I guess the main guts itself is in the loft. I need to pull back the insulation to check the electrics so will take a look