The peak flow meter uses a differential-pressure sensor to measure PEF and FEV1, meeting U.S. health guidelines.

Its LCD screen shows test results and a risk indicator, reflecting control conditions when personal values are set.

Powered by two AAA batteries, it operates for up to a year with daily use. The compact, pocket-sized design allows easy portability and use anywhere.

The open pipe design ensures easy cleaning, making it ideal for respiratory health monitoring.