This is an air quality analyzer

🏭🚗💨Especially relevant in urban conditions: gas pollution, dust, furniture and coatings made of synthetic materials lead to the accumulation of harmful substances

There are various options in terms of price and functionality; the more functions, the higher the cost, accordingly


What does it measure?

In maximum configurations it is possible to measure:
- temperature
- humidity
- carbon dioxide level
- amount of particulate matter 2.5 and 10 microns
- TVOC level (formaldehyde, benzene, alcohols, solvents, plastic and paint emissions)
- HCHO (formaldehyde)
- noise level

PM2.5 (or PM 2.5) Fine particles. Formed during fuel combustion (exhaust, factories, fires, smoke). Due to their tiny size (30 times smaller than a hair's thickness), they penetrate deep into the lungs and enter the bloodstream, causing cardiovascular and pulmonary diseases.
PM10 (PM10): Inhalable particles, less than 10 microns in diameter. Include dust, pollen, soot, particles of building materials. Usually formed from mechanical processes: road dust, construction, agriculture

I don't provide links; on marketplaces the selection is very large in terms of functionality and prices, everyone can choose for themselves. Also, such a sensor can be a good gift 🎁