Features
1)Forced Vital Capacity (FVC), forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) ratio (FEV1/FVC), peak expiratory flow (PEF), forced expiratory flow at 25 % of FVC (FEF25), forced expiratory flow at 50 % of FVC (FEF50), forced expiratory flow at 75 % of FVC (FEF75) and forced expiratory flow from 25 % ~ 75 % of FVC (FEF2575) can be measured.
2)The personnel information (including height, age, sex, etc.) can be set.
3)Flow - volume chart, volume - time chart display.
4)The data can be stored, deleted, uploaded and reviewed.
5)Trend chart display.
6)Health state indication.
7)Calibration function.
8)Over - limit prompt function for volume and flow.
9)Bluetooth transmission.
10)Real-time clock can be set and displayed.
11)Battery power indication.
12)Automatic shutdown when there is no operation within two minutes.