These switches need no built-in box, no battery and no 230V! Easyfit generates its own energy every time you press a button. The transmission power generated is just enough to send switch commands but also to dim.
Easyfit from EnoCean can participate perfectly in frameworks of other suppliers such as JUNG-AS500WW (colour corresponds to WW), but there are many other brands they fit in such as; BERKER S1, B1, B3, B7 Glass, or GIRA Standard55, E2, Event, Esprit or JUNG A500, Aplus or MERTEN M-Smart, M-Arc, M-Plan. Delivery includes an adhesive film; So you can even stick the switch on the glass.