@dgomes - thanks for your work on the KMtronic integration - having tried it for my KMtronic LAN DS18B20 Temperature Monitor I noticed it was only for relays hence doesn’t work…
how difficult would it be to extend your existing module - as looks like there’s nothing else out there?
I’m moving from Domoticz and have it working with Domoticz following the related guide (LUA script)
thanks
You would need first to extend GitHub - dgomes/pykmtronic: This library provides a Python3 interface to KM-Tronic web relays. by implementing a sensor (similar to relay.py)
Then you need to open a PR to extend core/homeassistant/components/kmtronic at dev · home-assistant/core · GitHub with a new sensor that gets the information from the previous library.
This should get your device supported 
Thanks - I will add it to my list of projects - not needed thanks to Richard’s solution
You can simply use the REST integration to read temperatures from this.
https://www.genwiki.uk/doku.php/opensource/kmtronic_ds18b20
Which works fine for me, and I’ve got three of these.