@Giorgio1606 hi, thats right but its really not convenient. I ment a switch for every unit would be a nice idea or controlled via the App or having like a schedule.

I know about the interface but you can switch it on or off only as a whole and not independently. Is there any other way to control the units independently or set a schedule? Thanks

  @David-TP 

well except if I am wrong this would cut the power. But i am only interested to cut the wifi and not the Power since its connected to different items with LAN cable. Do you have maybe any suggest for any other Deco wich supports wifi control ability? Thank you

This feature would be great to have. Currently I am using one of my Deco units as a way to connect my NAS to the internet using ethernet since the NAS doesn't support WIFI.
I would love to be able to turn of wifi for this spcific unit because I already have another unit in the same room which is in a more optimal location for supplying WIFI.
By being able to turn off the wifi of a single unit I hope to be able to give some more space on the WIFI bands for the other devices and stop the constant switching of clients from unit to unit.