Aranet Aranet4 - About the Aranet4 Device

What does
Aranet4 monitor?
¹aranet.com/library/harvardstudyco2
420 ppm
fresh outdoor air
Under 800 ppm
optimal CO₂ level indoors
CO₂ levels1
CO₂ is expressed in parts per million (ppm)
800 to 1000 ppm
brain cognitive function
decreases by 15 %
Over 1000 ppm
brain cognitive function
decreases by 50 %