SEVEN, ALWAYS-ON SENSORS: WiFi connected indoor air quality monitor measuring radon gas, particulate matter (PM2.5), carbon dioxide (CO2), VOCs (airborne chemicals), humidity, temperature, and air pressure ACCURATE RADON DETECTOR: The digital radon detector uses passive diffusion chamber sampling with alpha spectrometry detection for accurate and reliable readings FREE and FRIENDLY APP: Use the Airthings app to check current air quality readings and analyze trends over time, get timely notifications and tips to improve your air, check your local pollen forecast with data from Breezometer SMART and HEALTHY HOME: Ask your Amazon Alexa to audibly share current readings and use IFTTT or Homey to trigger smart air purifiers, heaters, plugs, etc EASY-TO-USE and CABLE-FREE : Quick and easy setup. Understated unit that is battery-powered for cable-free placement, customizable eInk screen, access to complete readings in the app WHAT YOU GET: Airthings View Plus, 6 AA batteries, Quick Start Guide and Airthings Support