PM2.5 Sensor Arduino - 搜索视频

What is PM2.5?

PM2.5 refers to fine particulate matter that’s 2.5 micrometers or smaller—about 30 times thinner than a human hair! These particles are so tiny, you can’t see them individually, but they can make the air look hazy. They come from things like vehicle exhaust, burning fuels, wildfires, and even chemical reactions in the air. Because of ...

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