ᐅ Electric roller shutters with astronomical timer

Hello,
I didn’t find much using the search term "Astro," so I’m starting a new thread here.

We want to install electric shutters in all rooms.
At least in the bedrooms, I want the shutters to automatically open at sunrise.
As far as I know, this is called an "Astro" function.

I have no experience with this and would like to know from you which brands offer reliable products and how exactly these systems (especially the sensor part) work. If possible, I’d also like to know approximately what such a system costs per shutter (excluding installation).
I’m also very interested in hearing about your experiences and what you have installed yourselves.

For GIRA, I have seen there’s some kind of odd antenna that you attach externally to the window.
But such an antenna doesn’t look very nice and will probably fall off eventually (suction cups never held for me).
Also, I don’t want to install a separate antenna for every window.

We are also considering whether it makes sense to equip all other windows with such a sensor or to use a different kind of programming, for example to simulate presence during a vacation.
However, I don’t want to pay any price for this, and I have no idea what additional costs such extra features would cause per shutter.
We do not want to install a bus system, and I hope there are already wireless options available on the market.

The most important thing is the Astro sensor for the bedrooms.

Otherwise, our plan is to connect all shutters in the house centrally in addition to decentralized switches in each room, and to install an additional switch in one place for "raising/lowering all shutters in the house." We do not want a central distribution per floor.

Our architect recommended the control system from Somfy. (We are still in the planning phase.) As far as I know, the astro function operates using weather data retrieved via the internet. This means it calculates when sunrise occurs in the area. Of course, there is also a control option that automatically darkens the rooms with the shutters during intense sunlight or based on a timer. A good supplier of windows and roller shutters should be able to explain the details.

I would find it annoying if I were sleeping and that thing started making noise.
Although... maybe you don’t hear it, or other people’s windows/shutter boxes have better sound insulation.

I have the Thor Rademacher (available for 40 Euro per control unit under Jarolift) and am quite satisfied. Most contractors charge significantly more for a simple switch! Our electricians installed them for five Euro each. They have an internal calendar and simply calculate sunrise times. You can also set an offset if needed (to adjust earlier or later). This works well for my needs; I use it in many rooms (when it’s dark outside, there’s not much to see anyway).

The device also offers a lot of other functions (daily/weekly schedules, random mode for absence simulation, etc.). If needed, it can be combined with a light sensor and suction cup, but it also works without them (these are mainly for shading in summer).

From on the go

The option to save specific times for sunrise each day or to have it calculated would already be sufficient for me, especially if a presence mode is included directly.

Wouldn't it then be possible to link only one of these switches to the central switch so that the signal can be distributed equally to all blinds? Having a separate astro sensor for each blind would be completely over the top.

Well, because of the price, we have a switch at each roller shutter (as mentioned, get some quotes for switches first… and I think there should be the option to operate the shutters in every room). A presence detection mode is not included, but I believe that such a feature wouldn’t work well in the bedroom anyway, since you might be very still and quiet under the covers—how should a presence sensor detect that?

In our case, the roller shutters in the bedrooms (especially the children’s) do not raise automatically because it varies too much (the children are still very young). Some shutters go up early when I leave for work, but most operate according to the astronomical timer function.