Covid-19 can be spread by invisible respiratory droplets in the form of an aerosol that remain in the air for up to 9 minutes.
The survival of these airborne droplets depends on the quality of the air. Aranet4 accurately monitors C02 concentration, which is used as an indicator of air quality and whether there is sufficient ventilation. Should the quality of indoor air become unhealthy you will be alerted to take appropriate action and to increase the airflow to the room.
Proper ventilation significantly reduces the time these harmful aerosols remain airborne from 9 minutes to 30 seconds.