@danielccm, @jelockwood look at this topic
Italy: Switches and sockets: compatible SmartThings and BTicino Live Now?
BTicino is a Legrand company has it’s own zigbee line with the same Netatmo (Apple HomeKit) connect part and gateway. They have a better design than the Legrand ones and do support multiple modules side by side.
I have found some display models of the modules in Poland selling for about 10 Euro, but couldn’t find a switch cover. You might can find it in the UK or other countries.