FAQ - a frequently asked question about the meter is:

FAQ air-Q pic

How many indoor air measuring devices are needed per room?

Response:

Basically, the air-Q is oriented to the regulation for smoke detectors.
To ensure a sufficiently high reaction speed to occurring gases, we therefore recommend a maximum room size of 60sqm (with a normal ceiling height of approx. 2.8-3.2 m). In L-shaped rooms, several air-Q measuring devices should be set up - one device on each side.

air-Q Air Quality Meter

Monitor air quality, all air components and environmental influences with the air-Q. For your health and performance.