electric roller shutters / switch

Motor approx. 50€ (more is always possible) Serial switch mutually locked with arrow marking and frame approx. 15€ Supply line per meter approx. 1.00 - 1.50€ (power supply for the motor) That’s about the material costs

@Elektro If I inquire, I will surely get an answer, but "currently" I do not have it, as no company is listed in the preliminary sampling catalog

Price is for a front-mounted or surface-mounted roller shutter? Aluminum or PVC? If surface-mounted roller shutter, with plasterboard inside or do you see the "white box" The price for a roller shutter with "China motor" is okay at first, almost too cheap.

insulated aluminum slats

Then the price including the motor is good

We are currently planning how to connect the roller shutters.
A mutually interlocked series switch can either move only all the way up or all the way down or also stop in between?

No, that is not correct.
It behaves like a light switch in this case, meaning that as soon as I turn the switch "off," the blinds also stop.

Since you are talking about a switch, I assume you are not using a central control, which I cannot recommend. If there is interest, I can gladly provide a concept for the control.

Regards