You can live without food for a month, without water for a week and without air for five minutes. It is important to be aware of the air we breathe. The JACOB JENSEN Air Quality Monitor is user-friendly product that measures and displays indoor air quality, humidity and temperature, providing you with an essential overview of the indoor climate in your home. The Air Quality Monitor features a built-in Quad-colour light that glows according to Air Quality Index (AQI) levels. Ideal for a quick glance.