# K153149: Digital Thermometer, Models MT-1027, MT-4127, MT-1032, MT-4132, MT-4333, MT-4326, MT-4726, MT-4335, MT-4735, MT-09, MT-30, MT-31, MT-36

- Pathway: 510(k) (Traditional)
- Applicant: Sejoy Electronics & Instruments Co., Ltd.
- Decided: May 27, 2016 after 210 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: 3 generations back to K902624 (1990). 6 ancestors in all.
7 later devices descend from it; 1 cites it directly.
0 of 14 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K110776: Digital Thermometer MT Series, Sejoy Electronics & Instruments Co., Ltd. (2011) Summary page 4.

## Most influential descendants
- K163518: Digital Thermometer (2017), 6 descendants of its own
- K183393: Digital Thermometer (2019), 4 descendants of its own
- K200599: Digital Thermometer (2020), 2 descendants of its own
- K223044: Digital Thermometer (Model QT001) (2023), 1 descendant of its own
- K240109: Medical electronic thermometer (FC01, FC02) (2024), 0 descendants of its own

## Indications for use
The Digital Thermometers MT series are intended to measure the human body temperature in regular mode orally, rectally or under the arm. The devices are reusable for clinical or home use on people of all ages.

Source page: https://510kreport.com/device/K153149
Methodology: https://510kreport.com/methodology