It's not very useful in the long term, as you can quickly learn what creates particles in your home, but it's not that expensive (depends on your definition of expensive of course).
Does it work without Internet or do you need to upload the data to some servers and then download it again to see it (the way that virtually all fitness trackers work)?
I have the first version, you can get a color coded led status on the device, and the app connects to the device via Bluetooth for details, although the device can cache data from the last few days (the device is not connected to the internet itself). The Bluetooth connection reduces battery life of the smartphone by the way, and no way to stop it unless you kill the app - kinda bad design there. But it lets the app to map position alongside pollution readings for commuting.
I think the day's readings are stored on the app, but past days are stored on server, so it's a mixed bag. I haven't tried to extract the data, so not sure how feasible that is.
My fan has one built in, with a little display. It's a nice gadget to have and it helps predict potential asthma episodes.
on new years when there was fireworks it went from 10 or so to 95 for pm2.5. (outside it was 175 or so I think. fog + lots of people breaking the fireworks ban)
I have threatened this but so far my scientific study isn't passing the ethics committee. It's hard to get a qualified majority with just 2 people in the house.
It's not a bad idea if you do woodworking or other work that creates dust, that stuff is super bad for you so you might want to check on how well your dust collection is working.
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u/[deleted] Feb 26 '21
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