FAQ - a frequently asked question about the meter is:

FAQ air-Q pic

How loud is the air-Q in operation?

Response:

The air-Q is as quiet as a whisper. A very small fan in the particulates sensor is only perceptible when listening closely directly to the ear. If sensitive people are also bothered by this noise, the fan can be deactivated in the app in night mode. In this case, no particulates measurements are taken.

air-Q Air Quality Meter

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