CubeSensors Air Quality Monitoring Cubes for 4 Rooms Easily keep track your home's temperature, humidity, air quality (VOC), light, noise and barometric pressure from anywhere in the world All measurements are updated once a minute, and streamed to a web app that works on iOS and Android devices and most modern computers 4 rechargable Cubes included, each Cube can track one room; you can place the Cubes in each of your bedrooms and other rooms you want to monitor Get instant feedback about the health of the room you're in by shaking the Cube; a red glow means something could be improved, a blue glow means everything is ok The pack includes everything you need for set up, including a Base station, which connects to the internet via ethernet and has to be online to collect measurements from nearby Cubes