This morning I checked the cluster for errors, but there were none. No errors, no change in slave/master roles or whatsoever. : )

Furthermore the 433 MHz ASK modules still work like a charm! The light sockets seem to respond better to the Raspberry cluster, then to the original remote.

Other little update>> The TV, digital TV tuner, radio etc. are switched off at night, and are powered back on in the morning. This will save some extra €15,- on standby-power a year.