Air quality
Airthings Wave Plus
Airthings
Battery-powered Bluetooth air monitor from Airthings with six sensors: radon, CO2 (NDIR, 400-5,000 ppm, ±30 ppm ±3% per Airthings), TVOC, temperature, humidity and air pressure, with a red/yellow/green glow ring; Airthings quotes about 16 months of battery on Bluetooth (18 months with a SmartLink hub). Price: $249.99, checked Oct 4, 2026; Airthings offers a free 5-year extended warranty and lists HSA/FSA eligibility through a partner. US availability: sold on airthings.com (US), in stock. Directory: Air quality > CO2 monitors.
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