More specifically, do all the outside sensors use WiFi to talk to the display inside? Or are there any models that use a proprietary solution for that? Maybe this is a dumb question!
Sent from my iPhone using Tapatalk
Outside sensors usually talk to the console or gateway unit by radio signal - a simple broadcast 433 Mhz for the US
If your Mum just wants her local data and doesn't care about sharing it all she needs is a standard station and a console to display the data
Something like this
https://www.ecowitt.com/shop/goodsDetail/173Then you add the sensors to it that you want. There are loads of manufacturers, some supply the console and a sensor package as well (usually an anemometer, temperature sensor and rainfall guage but it varies)
With mobile data coverage she can share it if she wants to
I know that ecowitt has a 4G station -
https://www.ecowitt.com/shop/goodsDetail/197I assume Ambient sells something similar
And DAVIS stations can connect using this
https://www.davisinstruments.com/pages/vantage-connectI am sure there are others, might get pricy with data plans though and unecessarily complicated