Enocean switches have no battery, no 230V and therefore do not require a flush-mounted box because they are flat on the back! Enocean switches are manufactured by well-known brands such as JUNG, Busch-Jaeger, GIRA, VIMAR, etc. Every time you press the switch, 'kinetic energy' is converted into 'electrical (transmit) energy', which produces a brief 'click' sound.
It is a misunderstanding that you cannot dim with these Enocean Easyfit switches.