# K040723: Microlife Electronic Peak Flow Monitor, with Pef and FEV1, Models PF-100 and PF-100-1 (with Software)

- Pathway: 510(k) (Abbreviated)
- Applicant: Microlife Intellectual Property GmbH
- Decided: Jun 10, 2004 after 80 days
- Product code: BZH (Meter, Peak Flow, Spirometry)
- Device class: 2
- Regulation: 21 CFR 868.1860
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 3 generations back to K943678 (1995). 3 ancestors in all.
9 later devices descend from it; 4 cite it directly.
0 of 13 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K031024: Microlife Electronic Peak Flow Monitor, Model PF-100, Microlife Corp. (2003)
- K982995: Accutrax, Model EPF840, Korr Medical Technologies, Inc. (1998) Summary page 4.

## Most influential descendants
- K152276: Wing Smart FEVI and Peak Flow Meter (2016), 4 descendants of its own
- K181666: Smart One (2018), 3 descendants of its own
- K193311: Aluna (2020), 1 descendant of its own
- K253180: Microlife Digital Peak Flow Meter, Model PF200B (PF200B) (2026), 0 descendants of its own
- K232588: Aluna 2 (2024), 0 descendants of its own

## Indications for use
This device is intended for monitoring PEF (Peak Expired Flow Rate) and FEV1 (Forced Expiratory Volume in one second) for patient home use. The device is designed for pediatric to adult patients.

Source page: https://510kreport.com/device/K040723
Methodology: https://510kreport.com/methodology