# K203707: Infrared Forehead Thermometer, Model JZK-601, JZK-602, JZK-603

- Pathway: 510(k) (Traditional)
- Applicant: Shenzhen Zhengkang Technology Co., Ltd.
- Decided: Mar 12, 2021 after 84 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 K171578 (2017). 2 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K191251: Infared Thermometer, Shenzhen Calibeur Industries Co., Ltd. (2019) Summary page 5.

## Most influential descendants
- K203662: Infrared thermometer, Models: YRK-002A, T8, T9, T10, T11 (2021), 0 descendants of its own

## Indications for use
The Infrared forehead thermometer (Models JZK-601, JZK-602, JZK-603) is a non-contact infrared thermometer intended for the intermittent measurement of human body temperature from forehead at a distance of 1-5cm for people of all ages. The device is reusable for home use and clinical use.

Source page: https://510kreport.com/device/K203707
Methodology: https://510kreport.com/methodology