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- Show HN: A subtly obvious e-paper room air monitor (nicolin-dora.ch)
In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which…
- Ein unauffällig auffälliger E-Paper-Raumluft-Monitor (Teil 1: Warum?) (nicolin-dora.ch)