474
people found this helpful, as of 2023
ranked #39,719 most helpful
out of 571,544,897 reviews
★☆☆☆☆
Not reliable.
Bought two units. They reported different measurements. Looked at the manual, calibrated them outside with fresh air for 10 minutes. They're still reporting different measurements.
the product in question
Air Quality Monitor, Formaldehyde Detector, Temperature & Humidity Meter, Pollution Tester, Sensor; Detect PM2.5/PM10/PM1.0 Micron Dust, Test Indoor TVOC Volatile Organic Compound Gas; eBook
3.8★ · 1,683 ratings, as of 2023