Interview with Christian Walser, Global Product Manager for Controls, IoT & Cloud Solutions.

The three factors of humidity, CO2 and temperature must be considered equal in terms of their importance for a healthy indoor climate. That's why we also worked with three equally sized circles on the display.
With the Condair Cube, we wanted to create a high-quality mobile device that helps people to "see" an eventual harmful indoor air pollution - everywhere and in real time.