Assistive products for controlling, adapting or measuring elements of physical environments

Products intended to control or modify specific elements of the physical environment, e.g. air quality and noice.
27 03

Assistive products for environmental improvement

(25 product series)
Devices for protecting a person from adverse environmental influences by eliminating or controlling unfavourable factors.

27 06

Measuring instruments

(42 product series)
Devices for measuring physical properties.