Air Quality Monitors from USD $169 to $6k use the same low-cost PM Modules

Submitted ⁨⁨2⁩ ⁨years⁩ ago⁩ by ⁨bot@lemmy.smeargle.fans [bot]⁩ to ⁨hackernews@lemmy.smeargle.fans⁩

https://www.airgradient.com/blog/most-aq-monitors-use-same-pm-modules/