Wondering if anybody knows of 12v powered wifi devices that will communicat with HA. Specifically i am looking for wifi battery voltage sensor so i can monitor and set notifications if my batteries in my motorhome are low. I have good wifi and communicate with a cam on a sidewalk loght post. I have a yolink motion sensor for security mounted in the rv and it works well but yolink does not make what i am asking.
This project will be of interest to you:
There are also plenty of videos on the topic to see what ideas you can put into your one:
https://www.google.com/search?client=firefox-b-d&q=home%20assistant%20rv