Very helpful—thank you very much Glenn!
I'm a little bummed that I did not see that earlier, but more bummed that it doesn't receive Somfy RTS commands. Somfy does make at leasts one motor model that supports a Z-Wave interfaces, status messages, etc., but the rollers are larger than mine at the moment, etc. It would be a major equipment change. I was hoping to live with the RTS—I will.
FWIW, I installed Aeotec Z-Wave "Door / Window Sensor 6" sensors (
https://aeotec.com/smallest-door-window-sensor/) on each shade, to detect when it is down. I attached the magnets to the back side of the trim bar at the bottom of the shade, and mounted the sensor units at the point where the bar stops, e.g., on the window sill (window shades) or on the door frame (door shades). I mounted them so that they could be slid sideways a little to remove them from the mounting plate for recharging. For my windows, the magnets that shipped w/ the sensors worked fine. For the doors, the shade would sometimes float away from the sensors and not trigger the sensors, so for those I installed some larger, very strong, Neodymium magnets (
https://www.amazon.com/dp/B0788MFD2G/ref=cm_sw_em_r_mt_dp_U_o2cgFbWDXXPQY). The magnets are so strong though, that they will pull the shade bar against the wall when it's raising/lowering, because there are metal "corner bead" pieces behind the drywall (standard means for protecting drywall corners from damage). So, I then purchased some clear polycarbonate tubing (
https://www.amazon.com/dp/B000OMJ50K/ref=cm_sw_em_r_mt_dp_U_h8cgFbY627NY7), cut it into small cylindrical segments, and then cut some of those in half long-ways to make small semi-cylindrical "dome-like" covers for the magnets—a smooth curved covering to make the magnets stand off from the wall a little. It all works really well—I now at least know when shades are down, which is very useful. I have considered adding sensors for "up" but even for my crazy overkill, that would really be overkill. I just assume they are up if not sensed down.
Thank you again.