The one in my original 2nd pic (with L, 1 and 2) is MK. I wired it up with L being com and 1 being L1 and the switch with turn light on when pressign the switch down."Does not matter if other wire goes to 1 or 2, although most would as default put it in 1." unless using Mk switches when putting it in 1 will mean the light on with switch "up" and scolmore is the other way round DAMHIKT
I have now a complication in the stairs where one 2 way + one intermediate are upstairs and one 2 way is downstairs, all controlling one light on the stairs. The two switches upstairs work ok, as soon as I wire up the switch downstairs (2 way, with L being com, 1 being L1 of the old switch and 2 being L2 of the old switch) the RCA for the downstairs lighting trips... And I believe I kept the same connections and wiring as in the old 3 sockets previously installed... Will ponder...