Hi, thats actualy a pretty darn good idea! Never thought about it, but now I am… thanks 
The buttons do still work with the board, the override the fanspeed, or more set the max speed. For example, if I put it on 1, and in home assistant on lvl 100 speed, the fans turn slower than when the buttons are on 3.
Gonna look in to that in the future, thanks.
The RJ45 has an uart tx at 38400 baud. It sends status messages containing serial number and dial position. Did not manage to interact with it. Not sure which pin is rx and if it has the ability to listen and reply at all. But why go to the trouble of adding a connector and transmitting data if no interaction is possible? I would like to be able to control the fan speeds over serial and leave the button interface functional.
I think there has to be a functionality since Jaga adverticed the ‘Domotica’ interaction on the website. Never found a way to do this the easy way though.
That’s a pretty interesting topic — I also have some Strada Hybrid units running. I’m still a bit confused about the “Home Automation” capabilities. In my case, I have the JAGA Strada Hybrid with the button array connected to the hidden controller.
On their website, there’s a specific variant called Strada BMS, and its documentation explicitly mentions support for controlling the fan via a 0–10 V input. The Hybrid variant doesn’t mention this, but the controller board itself seems to have such an input anyway.
So this all raises the question: is JAGA just not very transparent about the controller board’s capabilities? From what I’ve read so far, it seems that the 0–10 V input might work regardless of whether you have the BMS variant or not.
In my setup, I already have external temperature control modules in each room that track both actual (Ist) and target (Soll) temperatures. So the Shelly Dimmer would be fully controlled by the logic in Home Assistant — no local control needed.
Has anyone here tried using Shelly Dimmers for this? I’ve got a few lying around and would be willing to test them — but I’d rather avoid frying my controller if someone has already tried and failed. 
Final question though: I’ve read that the control wheel on the unit should be set to position 5 for this kind of setup. Where can this information be found? The documentation only mentions position 0 for the window input (open/closed), but nothing beyond that.
BMS Variant:
Hybrid Variant:
Here you find an old Dutch manual with the different dipswitch modusses: https://www.warmteservice.nl/medias/root/B_DBH_MANUAL_medialink.pdf?context=bWFzdGVyfHJvb3R8MTcxMTE4N3xhcHBsaWNhdGlvbi9wZGZ8aDU0L2g5NC84OTg1OTM0Mzk3NDcwLnBkZnxmZDYxNWZlNmJkN2VlMGNkOWZmMTkzY2ZjZTU2MDU5Nzc2MmE4MjhlNDI4MmY2NTExNWM0MmM4MmJlMmMzNGM5
Warning:
Jaga has informed me that the DBH (ACO) controllers are not suitable for controlling other than the ACO mode. Other applications are discouraged and no service is provided.
Hello, do you sell the boards?
Hi, well… since this is some next level tinkering and not really ‘plug and play’ I don’t intend on selling them, but you can try to replicate them form the first post.
Just set my ACO controllers to setting 5, installed the Shelly Dimmer 0-10v on the pins of the diagram and it works. So no difference to the BMS and ACO product they sell.
Hello Guys, i am verry new to HA word and electronics … while not rocket science still lack of details from jaga makes it difficult for me.
I am trying to use the shelly 10v dimmer but i can’t make it work,
My model is HCB623, Strada Hybrid and the board look eactly like yours Seyude
i tried to connect the 10v from dimmer on the right side as you did but this has not effect. Initially ROtary is on B setting, tried 5 , 6, no effect.
any chance someone could help me ?
Update: I managed to make it work , the settings 5 (on the rotary wheel) requires the control command to be disconnected.
I’ll try to see if using setting 6 i can keep water temp based mechanism (start fan only when water temp reach the required temp)
Thank you again @Seyude For this amazing thread !
