Indoor Air Quality MeterMonitor Indoor Air Quality (IAQ) in public spaces with potentially high levels of CO2 (carbon dioxide). Poor air quality may cause tiredness, inability to concentrate, and even illness (i. e., Sick Building Syndrome). This instrument is ideal for monitoring indoor air quality in crowded public spaces with potentially high levels of CO2 (carbon dioxide) such as offices, factories, classrooms, hospitals and hotels. The same measurement parameters can