When I create a Room in the IKEA App (on my Android Phone) named i.e. Stue and add som light bulbs and perhaps a switch to this room, I automatically get an entity in HA named light.stue.
But what is the purpose of that entity and what can it be used for?
It has an on/off switch that can be used to to do just that; switch the whole group on and off. If I switch either of the individual entities in that Room on, the state of the light.stue (pictured above) doesn’t change. It remains off. And if I use this entity to switch everything in the Room on, and then manually switch every individual entity off, one by one, then the Room entity (light.stue) as pictured above, remains on even though everything is off.
If I slide the brightness to, say 15%, then everything in the Room is turned on but the state of light.stue remains off.
So what is actually the intended purpose of this entity?