Cleared Traditional

K163601 - RII Smart IR Thermometer (FDA 510(k) Clearance)

Class II General Hospital device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K163601 · Radiant Innovation, Inc. · General Hospital
Dec 2018
Decision
715d
Days
Class 2
Risk

K163601 is an FDA 510(k) clearance for the RII Smart IR Thermometer. Classified as Continuous Measurement Thermometer (product code FLL), Class II - Special Controls.

Submitted by Radiant Innovation, Inc. (Hsin Chu, TW). The FDA issued a Cleared decision on December 6, 2018 after a review of 715 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the General Hospital FDA review panel, regulated under 21 CFR 880.2910 - the FDA general hospital device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind General Hospital submissions.

Submission Details

510(k) Number K163601 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received December 21, 2016
Decision Date December 06, 2018
Days to Decision 715 days
Submission Type Traditional
Review Panel General Hospital (HO)
Summary Summary PDF
Regulatory Context
Review time vs. panel average
546d slower than avg
Panel avg: 169d · This submission: 715d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code FLL Continuous Measurement Thermometer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 880.2910
Definition A Continuous Measurement Thermometer Is A Clinical Electronic Thermometer Indicated To Measure The Body Or Skin Temperature Of A Person Continuously Or In Specified Intervals. Under This Regulation, This Product Code Represents Non-exempt Devices. For More Information, See 90 Fr 25889, Available At Https://www.govinfo.gov/content/pkg/fr-2025-06-18/pdf/2025-11207.pdf.
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most General Hospital devices follow this clearance model.

Regulatory Peers - FLL Continuous Measurement Thermometer

All 14
Devices cleared under the same product code (FLL) and FDA review panel - the closest regulatory comparables to K163601.
Sterile temperature probe (Model: W0001ES, W0028ES, W0101FS-A, W0101FS-P, W0099LS, W0099FS, W0099PS)
K251160 · Shenzhen Med-Link Electronics Tech Co., Ltd. · Jan 2026
Ear Thermometer (EAR-E101)
K250470 · Shenzhen AOJ Medical Technology Co., Ltd. · Jun 2025
Reusable Temperature Probe (T1306, T2306, T3306, T4306)
K243000 · Shenzhen Medke Technology Co., Ltd. · Jun 2025
YUWELL® Infrared Ear Thermometer (YHT100)
K250878 · Jiangsu Yuyue Medical Equipment& Supply Co., Ltd. · May 2025
Infrared Thermometer
K243082 · Guangzhou Daxin Health Technology Co., Ltd. · Apr 2025
Mon-a-Therm™ General Purpose Temperature Probe 400TM (90050, 90044)
K240077 · Covidien · Aug 2024