Y9ZMT14H419Hearing protection with two-way radio headset

Covered Equipment Certification Attestation Letter February 13, 2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: Y9ZMT14H419 3M Company (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. 3M Company (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Yuriy Litvinov Title: Lead EMC Engineer Company Name: 3M Company Date: 2/13/2026

* the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter December 2, 2025 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: Y9ZMT14H419 Per section 2.911(d)(7) of the FCC rules, 3M Company (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: 3M Company Physical U.S. Company Address: 3M Center Building 76, St. Paul, MN 55144, USA Agent name: Yuriy Litvinov Agent Email Address: [email protected] FRN: 0005881040 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Designated Agent Signed: (Required, if different to Applicant): Signed: Signed: Printed name: Yuriy Litvinov Printed name: Click here to enter text. Title: Lead EMC Engineer Title: Click here to enter text. Company Name: 3M Company Company Name: Click here to enter text. Date: December 2, 2025 Date: Click here to enter a date.

February 13, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: Y9ZMT14H419 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of 180 days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☒ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Yuriy Litvinov Title: Lead EMC Engineer Company Name: 3M Company

No.LCPChange descriptionApprovedCheckedChanged 1-Updated with added regulatory infoHHPUGWPUKAPU2025-11-192025-11-212025-11-21 Revision b 1:1 Font and font size if not stated together with a logo: Font: Arial Font size: Arial Regular, 7p (1,2 mm height for small letter x) 2-"HVIN: MT14H419" added2026-03-12c.00GWPU . Work instruction MT14H419A-** **S COMTAC IX NA, SING FREQ LASER MARKING Scale Material First revision engineered Document type, product number, document description This document is our property and copyright subsists thereon. Without our written permission, it may not be copied, disclosed or otherwise divulged or made available to third parties, or be used as a basis for production or manufacture for others than us. Offenders will be prosecuted. © 3M Svenska AB Värnamo, Sweden First revision checked 1 First revision checked 2 First revision checked 3 First revision approvedDocument name/number P220111 Revision c.00 Page 1(1) 2022-10-01 HNPU MLPB 2022-09-29 GWPU 2022-09-28 HHPU 2022-08-16 TM Serial number Process order no (9 pos) + serial (4 pos) Article number See P200109 Data Matrix code 6,5x6,5 mm

REP0074312_FCC_Exp Nemko Group Nemko Scandinavia AS, Instituttveien 6, 2007 Kjeller, Norway TEL +47 22 96 03 30 EMAIL [email protected] nemko.com/no Template version: B RF Exposure Assessment Product ComTac headset Name and address of the applicant 3M Svenska AB Box 2341 Värnamo 331 02 Sweden Name and address of the manufacturer 3M Svenska AB Box 2341 Värnamo 331 02 Sweden Model MT14H419A ( ComTac IX ) Rating 915 MHz DTS transceiver Trademark 3M Peltor Additional information All tests were performed using fresh batteries Evaluated according to FCC Part 1.1307(b) RF Exposure Assessment FCC KDB 447498 D01 v06 General RF Exposure Guidance Order number PRJ0074312 Issue date 2025-11-11 Name and address of the testing laboratory Nemko Scandinavia AS Instituttveien 6 2007 Kjeller, Norway www.nemko.com CAB Number: FCC: NO0001 ISED: NO0470 ISED No: 2040D-1 An accredited technical test executed under the Norwegian accreditation scheme Prepared by [Jan G Eriksen] Approved by [Frode Sveinsen] This report was originally distributed electronically with digital signatures. For more information, please contact Nemko Scandinavia AS. Exposure Assessment FCC Part 1.1307 REP0074312_FCC_Exp FCC ID: Y9ZMT14H419 Nemko Scandinavia AS Page 2 (3) Revision history Revision Date Comment Sign A 2025-11-11 First Edition JGER GENERAL REMARKS This report applies only to the sample(s) tested. It is the manufacturer's responsibility to ensure the additional production units of this product are manufactured with identical electrical and mechanical components. The manufacturer is solely responsible for any modifications to the product that could result in non-compliance with the relevant regulations. This report shall not be reproduced, except in full, without the written approval of Nemko. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Nemko Group accepts no responsibility for damage suffered by any third party because of decisions made or actions based on this report. Opinions expressed within this report regarding general assessments and qualifications for PASS or FAIL to the standards limits and requirements, are not part of the current accreditation. Neither are opinions expressed regarding model variants covered by the testing of this report. Exposure Assessment FCC Part 1.1307 REP0074312_FCC_Exp FCC ID: Y9ZMT14H419 Nemko Scandinavia AS Page 3 (3) 1 Exposure Evaluation 1.1 EUT Technical Information Name MT14H419A ( ComTac IX ) FCC ID Y9ZMT14H419 Model/version MT14H419A ( ComTac IX ) Serial number Conducted: 1000000000011 Radiated: 1000000000026 Hardware identity and/or version K501A Software identity and/or version K501-st-application-1.0.0 For tests K501-st-application-0.0.0.148 software with test modes was used. Frequency Range 915.5 MHz Operating Modes TX 915 MHz, modulated Type of Modulation GFSK User Frequency Adjustment None Emission Class F1E Type of Power Supply Internal Batteries (2 x 1.5V) Antenna Type PCB Number of Antennas 1 Maximum Transmitted Power +3.3 dBm *) Prediction Distance (declared) 0.5 cm *) Radiated Power was calculated from measured Field Strength using the method described in ANSI C63.10-2020 Annex G – Formula G.2. 1.2 Evaluation Summary The EUT has been evaluated to FCC 1.1307(b) and has been found to be exempt from SAR Evaluation. FCC 1.1307(b)(3)(i)(B) Determination of Exemption for Single RF Sources Average Output Power, Conducted 1.66 mW Average Output Power, Radiated 2.14 mW Separation Distance d (cm)(valid for d ≤40 cm) d (cm) 0.5 cm Frequency f (GHz) (valid for f≥300MHz and f≤6 GHz) f (GHz) 0.9155 GHz ERP @20cm (mW) ERP 20cm 1867.62 mW value used in Threshold calculation x 1.47 Threshold value at Separation distance d (mW) P th (mW) 8.13 mW Verdict: EXEMPTED The above calculation is based on the formulas from FCC Part 1.1307(b)(3)(B). Radiated Output Power values are from Nemko Test Report REP119753. The evaluation is valid at the declared separation distance of 0.5.

REP119753 Template version: C Nemko Group Nemko Scandinavia AS, Instituttveien 6, 2027 Kjeller, Norway TEL +47 22 96 03 30 EMAIL [email protected] nemko.com/no Test Report Product ComTac headset Name and address of the applicant 3M Svenska AB Box 2341 331 02 Värnamo, Sweden Name and address of the manufacturer 3M Svenska AB Box 2341 331 02 Värnamo, Sweden Model MT14H419A ( ComTac IX ) Rating 3.0 V DC (2x 1.5V cells) Trademark 3M Peltor Additional information 915 MHz SRD transceiver Tested according to FCC Part 15.249 Operation within the bands 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.25 GHz ISED RSS-210, Issue 11, Annex B10 Bands 902-928 MHz, 2400-2483.5 MHz and 5725-5875 MHz Order number PRJ0074312 Tested in period 2025-06-01 – 2025-12-05 Issue date 2026-03-26 Name and address of the testing laboratory Nemko Scandinavia AS Instituttveien 6 2007 Kjeller, Norway www.nemko.com CAB Number: FCC: NO0001 ISED: NO0470 ISED No: 2040D-1 An accredited technical test executed under the Norwegian accreditation scheme Prepared by [Jan G Eriksen] Approved by [Frode Sveinsen] This report was originally distributed electronically with digital signatures. For more information, please contact Nemko Scandinavia AS. TEST REPORT FCC Part 15.249 REP119753 FCC ID: Y9ZMT14H419 IC: 4406A-MT14H419 Nemko Scandinavia AS Page 2 (17) Revision history Revision Date Comment Sign A 2025-12-08 First edition JGER B 2026-03-26 Editorials JGER GENERAL REMARKS This report applies only to the samples tested. It is the manufacturer's responsibility to ensure the additional production units of this product are manufactured with identical electrical and mechanical components. The manufacturer is solely responsible for any modifications to the product that could result in non-compliance with the relevant regulations. This report shall not be reproduced, except in full, without the written approval of Nemko. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Nemko Group accepts no responsibility for damage suffered by any third party because of decisions made or actions based on this report. Opinions expressed within this report regarding general assessments and qualifications for PASS or FAIL to the standards limits and requirements are not part of the current accreditation. Neither are opinions expressed regarding model variants covered by the testing of this report. CALIBRATION All instruments used in the tests given in this test report are calibrated and traceable to national or international standards. Between calibrations all test set-ups are controlled and verified on a regular basis by periodic checks to ensure, with 95% confidence, that the instruments remain within the calibrated levels. MEASUREMENT UNCERTAINTY Measurement uncertainties are calculated or considered for all instruments and instrument set-ups used during these tests. Uncertainty figures are found in a separate clause in this report. TEST REPORT FCC Part 15.249 REP119753 FCC ID: Y9ZMT14H419 IC: 4406A-MT14H419 Nemko Scandinavia AS Page 3 (17) CONTENTS 1 INFORMATION ......................................................................................................................... 4 1.1 Test Item ................................................................................................................................................... 4 1.2 Normal test conditions ............................................................................................................................... 5 1.3 Test Engineers .......................................................................................................................................... 5 1.4 Antenna Requirement ................................................................................................................................ 5 1.5 Worst-Case Configuration and Mode ......................................................................................................... 5 1.6 Comments ................................................................................................................................................. 5 2 TEST REPORT SUMMARY ...................................................................................................... 6 2.1 General ..................................................................................................................................................... 6 2.2 Test Summary ........................................................................................................................................... 6 3 TEST RESULTS ........................................................................................................................ 7 3.1 Occupied Bandwidth (99% BW) and Emission Bandwidth ......................................................................... 7 3.2 Field Strength of Fundamental ................................................................................................................... 8 3.3 Restricted Bands of operation .................................................................................................................... 9 3.4 Radiated Emission, 30 – 1000 MHz ......................................................................................................... 10 3.5 Radiated Emissions, 1-10 GHz ................................................................................................................ 12 4 Measurement Uncertainty ..................................................................................................... 14 5 LIST OF TEST EQUIPMENT................................................................................................... 15 6 BLOCK DIAGRAM .................................................................................................................. 16 6.1 Power Line Conducted Emissions .......................…

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page 1 © 3M Svenska AB Värnamo, Sweden Antenna specification The 3M Peltor Comtac IX includes a Natural Interaction Behavior (NIB) full duplex Communication radio. The NIB is working on the 915 MHz ISM band. The NIB antenna can be seen in the picture above. The PCB itself works as a ground plane. Antenna gain -6 dBi. Manufacturer: 3M Svenska AB / 3M PELTOR Communications