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I've been eyeballing this problem space for a while now and came to the exact same conclusions as you did, KNX for everything "important" + Home Assistant for nice to haves.

Just waiting for the build a house/completely renovate an apartment to put it to practice.

Can you give some more information about the sensors you use, especially for CO2/VOC measurements?



For air quality I’m using the arcus neo which can do co2, Voc, humidity and temperature. But they are damn expensive.

Unfortunately all the other KNX ones I looked at were super ugly/huge. The more ugly ones also had better features like particulate matter as well.

These are a super discrete and small brushed aluminium circle on the ceiling.

Other than that I have PIR sensors in every room that I mentioned in a sibling comment with presence, temp, light level.

One sensor I’m super happy with is the infrasonic water level sensor for the water tank, so I always know how much water I have left.

I also have a weather station connected in with a pile of measurements for outdoor stuff like light, humidity, temp, pressure.


Did you do the KNX setup yourself or did you leave that part to a professional?




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