Just wanted to share in case you’re still looking for a solution — I bought this tank monitor from Centri about three years ago and it’s been rock solid.
It’s solar-powered (which is perfect for us since we’re only at the place part of the year), and best of all, there are no recurring fees for the unit.
It connects directly via REST API, and once you buy the unit, they send over the credentials you need to get it integrated with Home Assistant. Super simple — I had it up and running in about 15 minutes.
Here’s the link to check them out: www.centriconnect.com
And there’s a forum thread about integrating it with HA here: LINK
