Place your CO2 monitor on a wall, at a height of 1-2 meters. Make sure that the monitor is not near any windows, air supply vents, open flames, or too close to people.
Readings on your monitor will fluctuate as people enter and leave the room, and as windows and doors are opened.
Refer to the Aranet manual for more information on how to interpret the information shown on your CO2 monitor.
