I think there should have a group state sync.
This would ease a lot of things. For example, I have two switches that control just one lamp. Tri-way configuration. But for that I had to create 4 rules on automatization. If I could control the whole group on the rules, I would need just 2.
Morgan in SONOFF
26 days ago
In eWeLink, there is group management. pls refer to the device setting "create group"