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Re:The bottleneck might be the air in the room by mdf on Saturday July 04, 2026 @06:30AM (#48784341)
Ruuvi Air[1] seems to be close to the middle in both price and CO2 measurement accuracy between aranet4 and the IKEA device. I don't have personal experience with Ruuvi Air specifically, but have been using their cheaper Ruuvi Tags (that don't measure CO2) for temperature, humidity and air pressure measurement at home and office.

[1] https://ruuvi.com/air/

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