Franz,
I have ordered a WIFI-Mesh-Extender for my Smart-Modem-2, and can expect delivery in week or so. I will let you know how it goes…
In the mean time, as you said, the Rachio 3 does continue to water my gardens on schedule (phew)
(PS: the Apple WiFi Airport Express will only connect to Apple WiFi Networks, and the technology is a bit old hat now, is no longer being updated by Apple, so I am happy to retire that kit).
Thanks for your help, very much appreciated…
I did some more tests this morning, more in my next post.
Robert.