Doeatoow Smart Wi-Fi Air Quality Monitor, PM2.5 Detector, Temperature & Humidity Meter, Data Logger via App Price: 79.99 (as of 30/09/2022 05:46 PST- Details)

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Real-Time Measurements: Monitor indoors for dust, pollutants, and other fine particles small enough to enter the respiratory system. Update PM 2.5 data every 5 seconds to ensure healthy air for your family.
Wi-Fi Connection & APP Remote Control: Connect via 2.4G Wi-Fi to the Tuya Smart App for viewing the monitoring data. No matter where you are, you can monitor the indoor air quality of your house.