Central control of roller shutters - What solution?

Primarily, it is important to me that I can lower and raise all the roller shutters or blinds at once. The simple reason for this is that I don't want to walk through all the rooms in the evening and press every switch. However, of course, I want to have the option to control the individual roller shutters in each room via a switch around noon. That is initially a MUST HAVE for me.

To support this MUST HAVE, the central switch (about 1000 €) would be sufficient.

Now I am wondering whether it makes more sense to go with Somfy. For me, that has the consequence that I have to equip all electric roller shutters and blinds with a radio motor and therefore do not have to lay cables from the switches. A central switch is then also not a problem anymore. However, since we have about 20 windows, that certainly would not be cheap. But it has the advantage that I can do everything with my phone (via tahoma Box). That would be NICE TO HAVE.

What I have now considered is that I could make the central 1000 € switch (see above) "smart." That means I buy a WLAN-RADIO switch (+ box, e.g., Amazon, Hue Box, etc.) and can control it with my phone – ON and OFF. That would have the advantage that I can take out the phone and move all the roller shutters up and down at the push of a button. The only question is, is that even possible?

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The advantage would be that I can take out the phone and all the blinds can go up and down at the push of a button. The only question is, does that even work?

Definitely with Tahoma :) Part of our blinds:

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I have programmed different scenes, for example
Window X - 0% (completely up)
Window X - 80% (almost completely down)
Window X - 100% (completely down)

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And created a schedule for when what should happen with which window etc., in other words, when which scene should be started:

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It probably works with other systems as well ...

What I have now considered is that I could make the central 1000 € switch (see above) "smart."

In my eyes, that's nonsense and not necessary.

We have exactly the same "requirements" as you and have all the windows done electrically in the "standard version." That means with a separate switch beside each window.
A central positioning of the switches would be both significantly more expensive and unattractive.

Anyway, I have deeper boxes installed throughout the house so that there is more depth behind the switches and "radio modules" can be easily installed. Whether Enocean, Bosch, Rademacher, Shelly, or similar, I still have to decide... Cost per piece 20-50 EUR.

In my case, these will be integrated via HomeKit (Apple) and controlled as desired. Whether by button press on the smartphone, tablet, or voice control, etc., everything is possible.
Various scenes can be created software-wise and the function or participating actuators (= blinds) can be defined. So it might be called, for example, "shade living room"...."all blinds up"...."all down"...."blinds on the ground floor closed," etc.... so that in my opinion, you get a cost-effective, flexible, and comfortable solution.

The question is just, is that even possible?

Sure, it is possible. But you only do that exactly five times, because you realize that secondary things like roller shutters are supposed to control themselves and you shouldn’t have to reach for the phone as well.

I am going to install deeper boxes throughout the whole house anyway, so that there is more depth behind the switches and "radio modules" can be installed without any problems. Whether EnOcean, Bosch, Rademacher, Shelly, or similar, I still have to decide... Cost per piece 20-50 EUR.

That helped me a lot. I think I simply didn’t understand it. But now a bit of light is coming into the darkness. How exactly does it work now.

At the moment, it looks to me like I have an electric roller shutter and a switch (which is located next to the window). In between there is just a cable. With such a "radio module" from EnOcean, Bosch, etc., I would simply connect the radio module in between, so switch -> radio module -> cable -> electric roller shutter. Then I can control the radio module from my phone so that I send "up" and "down" and it then looks to the electric roller shutter as if someone is operating the switch?

If I want all the roller shutters down, then I simply send "down" to all roller shutters. The central switch is then more or less redundant.

And of course, I can also make the radio modules "intelligent" with suitable software? That is, every morning at 6:00 am up?

Thank you very much for your help.

If I want all the roller shutters down, I just send "down" to all the roller shutters. The central switch is then, so to speak, superfluous.

Yes, something like that.

And of course, with suitable software, can I also make the radio modules "intelligent"? That is, up every morning at 6:00 AM?

Yes, here as well.