The “SWG Monitor” is an app developed by the Stadtwerke Gießen (SWG) and Fabrik19 that is connected to a sensor. The sensor measures room temperature, humidity and CO2 concentration in its environment. If the measured data is too high, app users are informed via push message that ventilation is required.

You can find out more about the app and the so-called LoRaWAN, which is used for data management, here.