About this item 【16-in-1 Multi-Index Air Quality Test Kit】This all-in-one indoor air quality meter tracks PM1.0 / PM2.5 / PM10 / Carbon Dioxide (CO₂), TVOC, HCHO, temperature and humidity. Tiered color lights show real-time air readings, guiding timely ventilation or purifier use for families. It displays invisible pollutant levels for bedrooms, studies and nurseries. 【Single-Button Operation with Dimmable Lights】One key controls power and ℃/℉ switching; double-tap dims l
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