Cleared Traditional

K822831 - RI 300 DIFFERENTIAL TEMPERATURE MONITOR (FDA 510(k) Clearance)

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

K822831 · Instrumentation Industries, Inc. · General Hospital
Oct 1982
Decision
37d
Days
Class 2
Risk

K822831 is an FDA 510(k) clearance for the RI 300 DIFFERENTIAL TEMPERATURE MONITOR. Classified as Continuous Measurement Thermometer (product code FLL), Class II - Special Controls.

Submitted by Instrumentation Industries, Inc. (Mchenry, US). The FDA issued a Cleared decision on October 28, 1982 after a review of 37 days - a notably fast clearance cycle.

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: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

Submission Details

510(k) Number K822831 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 21, 1982
Decision Date October 28, 1982
Days to Decision 37 days
Submission Type Traditional
Review Panel General Hospital (HO)
Summary -
Regulatory Context
Review time vs. panel average
132d faster than avg
Panel avg: 169d · This submission: 37d
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 K822831.
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