so, as a failsafe backup, you want HA to turn off (or on) the Shelly based on the temperature of the tank? If so, yes, you can do that with either Hydros integration above...as far as getting that temperature. However, if as you say Hydros has an issue, you may not get the temperature reading.Late on the followup, toddler twins will do that LOL
I did manage to build a HA/Shelly failsafed heater outlet (15a capacity)...but havent had time to implement yet. Testing worked though. XP8 outlet on/off will toggle it as a "dumb" relay while HA monitors the temp and has emergency backup control to turn the outlet on/off if anything goes wrong in hydros. This only came about because i needed something better than a 10a smart plug and thanks to this integration!
I did notice however that HA isnt pulling my 0-10v input sensors ( i have an ato water level sensor and an external humidity sensor run in via a breakout box.
Ill try and post some more useful observations at some point, but this stuff may be taken care of by the new API?
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I use the XP8 for my Helios heaters - Helios control with XP8 as the backup setup as heater control in Hydros.


