Digital Thermometer / PM1, PM2.5, PM10 / measurement of CO2, formaldehyde, TVOC, temperature and room humidity / WiFi connection / data retrievable via app / USB-C interface / battery status display. In addition, the Digital Thermometer displays room temperature and humidity and measures particulate matter. The display uses three colours - green, orange and red - to show the user immediately when the values become critical. The Digital Thermometer enables a Wi-Fi connection with other devices and allows the user to make individual settings via the Smart Life app. Thanks to the Smart Life app, the Digital Thermometer can be accessed from anywhere. In addition, the data can be called up as values and displayed as a curve. This data shows the progression of the measurements and can be called up on a daily, weekly or monthly basis. This allows the user to track the development of air quality over a certain period of time.