An email from AirThings has the Wave Plus sensor for $161 when using coupon code WAVEPLUS (usually $230).
Works with IFTTT, Alexa, Google Assistant.
Expires 3-15-2020.
Sensors: Radon, CO2, TVOC, Temp, Humidity & Air Pressure
Visual indicator: Red/Yellow/Green glow ring
Long battery life:
Bluetooth: 16 months
SmartLink (Hub): 18 months
Future low power mode: TBD months
Supports wall or ceiling mount
Free mobile app for iOS and Android
Web dashboard
Mobile notifications
Wireless connection (Bluetooth or Airthings SmartLink)
https://www.airthings.c
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