Review on 🌬️ Dust Sensor Air Quality Sensors by Grove: Monitoring and Improving Air Quality Effortlessly by Christopher Pfaffe

Works well and is easy to use. This is not a laser design and therefore does not count individual particles, but rather a cloud detection device that integrates low output signals caused by particles or groups of particles passing through an infrared beam over a period of typically 30 seconds. Well, down to a micron, which falls within the territory of dust and pollen. This is the Shinyei PPD42NS sensor for those interested in specs.