If the CO2 levels are monitored in office, class-rooms, at home and inside cars, this will have many positive effects. Besides the higher productivity of employees, it will help to reduce infection risks and can have positive impact on people with asthma or reduce car accidents caused by dizzy drivers.
If you connect your CO2 sensor to an automated ventilation system, you can make your building really "smart". The venting of conventional ventilation systems is always adjusted to the worst case (max. number of people and high activity level). In contrast, a smart, automated venting system with a CO2 monitor can adjust the air exchange level according to the CO2 levels. This will ensure a high air quality at all times while saving energy if the room is not fully occupied or activity levels are low.
Recommended Sensors for CO2 concentration measurements: