Air quality
Qingping CO2 & Temp & RH Monitor
Qingping
Wi-Fi monitor from Qingping with a Sensirion NDIR CO2 sensor (400-9,999 ppm) plus temperature and humidity sensors, a colored CO2 indicator, and remote viewing in the Qingping IoT app; it measures 77 x 77 x 28 mm. Price: $69.99, checked Oct 4, 2026. US availability: sold on Qingping's store in USD for the United States; the product page showed Add to cart (in stock). Directory: Air quality > CO2 monitors.
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