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A comment on Open-Source Home Automation. Parent comment
https://www.gira.com/en/gebaeudetechnik/systeme/knx-eib_syst...
You can see what one looks like in place here in the middle of this picture. I use black ones for my wood ceilings.
https://i.imgur.com/pTCOKJx.png
On the left hand side is one of the air quality sensors.
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https://www.gira.com/en/gebaeudetechnik/systeme/knx-eib_syst...
You can see what one looks like in place here in the middle of this picture. I use black ones for my wood ceilings.
https://i.imgur.com/pTCOKJx.png
On the left hand side is one of the air quality sensors.