# K063542: Wireless Temperature Monitor / Models ST323C and ST323F.

- Pathway: 510(k) (Traditional)
- Applicant: Mesure Technology Co., Ltd.
- Decided: Apr 10, 2007 after 137 days
- Product code: FLL (Continuous Measurement Thermometer)
- Device class: 2
- Regulation: 21 CFR 880.2910
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K003326 (2001). 2 ancestors in all.
33 later devices descend from it; 1 cites it directly.
0 of 36 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K023956: Thermometer Models ST313C/F, ST314C/F, ST323C/F, ST324C/F, ST333C/F, ST334C/F, Mesure Technology Co., Ltd. (2004) Summary page 1.

## Most influential descendants
- K143267: TempTraq TT-100 (2015), 32 descendants of its own
- K162137: Fever Scout™ Continuous Monitoring thermometer (2017), 29 descendants of its own
- K181013: Fever Scout (2018), 26 descendants of its own
- K191272: Wearable Device, Wearable Package (2019), 16 descendants of its own
- K210133: Current Health Monitoring System Gen 2 (G2) (2021), 8 descendants of its own

## Indications for use
The wireless temperature monitor, model ST323C, ST323F are the battery-operated electronic devices with intended use of measuring human body temperature precisely. This device is reusable and intended for armpit temperature measurement of the person of all age.

Source page: https://510kreport.com/device/K063542
Methodology: https://510kreport.com/methodology