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by formerly_proven 375 days ago
Not necessarily: https://www.bosch-sensortec.com/products/environmental-senso... (fits in an USB key: https://www2.purpleair.com/products/purpleair-pixel)
1 comments
Havoc 375 days ago
Oh that's fun. Been meaning to get PM2.5 for my place but the one I've got has a whiny fan

Thanks for linking

link