S7A-SP173Wireless Communication Systems

Sena Technologies Co., Ltd. 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-01-09 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: S7A-SP173 Applicant FRN: 0013268917 [Sena Technologies Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, [Sena Technologies, Inc.] is our designated U.S. agent for service of process for the above referenced FCC ID. [Sena Technologies Co., Ltd.] 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. [Sena Technologies, Inc.] accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Sena Technologies, Inc. U.S. Agent FRN: 0033442666 Address: 152 Technology Dr.irvine, CA 92618 USA Contact Person : Frank Cha Tell : +1 (888) 333-7362 Email: [email protected] Sincerely, Sena Technologies Co., Ltd. Sena Technologies, Inc. Seunghyun Kim Frank Cha

Rev 1/26/2023 Sena Technologies Co., Ltd. 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-01-09 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: S7A-SP173 [Sena Technologies Co., Ltd.] (“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. [Sena Technologies Co., Ltd.] (“the applicant”) certifies 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). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, Seunghyun Kim, Research Engineer Rev 1/26/2023 Sena Technologies Co., Ltd. 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-01-09 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: S7A-SP173 [Sena Technologies Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Seunghyun Kim, Research Engineer

Sena Technologies Co., Ltd. 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: S7A-SP173 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram Schematics Operational Description Part List [HelmLink SL] BLK [HelmLink SL] SCH [HelmLink SL] OpDes [HelmLink SL] Part List The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); Exhibit Type File Name External Photos Internal Photos Test Setup Photos Manual [HelmLink SL] EXT Photo [HelmLink SL] INT Photo [HelmLink SL] Test Setup Photo [HelmLink SL] Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. Sincerely, Seunghyun KIM / Research Engineer

SENA_HelmLink SL_ Label & Location Label location

SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 2/27 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) Revision history Revision Date of issue Revisions Revised By - February 02, 2026 Initial issue - SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 3/27 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) Table of Contents 1. Testing Laboratory ........................................................................................................................................................ 4 2. Details of Manufacturer ................................................................................................................................................ 4 3. Description of EUT(s) .................................................................................................................................................. 4 4. The Highest Reported SAR Values ............................................................................................................................... 4 5. Test Methodology ......................................................................................................................................................... 5 6. Testing Environment ..................................................................................................................................................... 5 7. Specific Absorption Rate (SAR) ................................................................................................................................... 6 7.1. Introduction ........................................................................................................................................................... 6 7.2. SAR Definition ...................................................................................................................................................... 6 7.3. Test Standards and Limits ...................................................................................................................................... 6 8. The SAR Measurement System .................................................................................................................................... 8 9. System Components ..................................................................................................................................................... 9 9.1. Probe ...................................................................................................................................................................... 9 9.2. SAM Phantom ....................................................................................................................................................... 9 9.3. Device Holder ........................................................................................................................................................ 9 10. SAR Measurement Procedures ................................................................................................................................. 10 10.1. Normal SAR Measurement Procedure............................................................................................................... 10 11. Definition of Reference※ ........................................................................................................................................ 12 11.1. Other consumer electronic devices .................................................................................................................... 12 12. SAR System Verification .......................................................................................................................................... 13 13. Tissue Simulant Fluid for the Frequency Band......................................................................................................... 14 14. Justification for Extended SAR Dipole Calibrations ................................................................................................ 15 15. Instruments List ........................................................................................................................................................ 16 16. FCC Power Measurement Procedures ...................................................................................................................... 17 17. Measured and Reported SAR ................................................................................................................................... 17 18. Maximum Output Power Specifications※ ............................................................................................................... 18 19. RF Conducted Power Measurement ......................................................................................................................... 19 19.1. Bluetooth Conducted Power .............................................................................................................................. 19 19.2. MESH Conducted Power ................................................................................................................................... 19 20. SAR Test Exclusion Applied ..............................................................................................................................…

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SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 1/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) Appendix C.1 Calibration certificate for Probe (S/N: 3862) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 2/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 3/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 4/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 5/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 6/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 7/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 8/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 9/31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 10 /31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 11 /31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 12 /31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 13 /31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx.) SAR7081-04 (2020.12.15)(0) A4 (210mm x 297mm) SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, 15807 Tel. 031-428-5700 / Fax. 031-427-2371 http://www.sgsgroup.kr Page : 14 /31 Report File No : F690501-RF-SAR000675 Date of Issue : 2026-02-02 (All SGS services are rendered in accordance with the applicable SG…

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2021.07.07 RA-N2106-07 APPROVAL SHEET MODEL : ICON Antenna layout Review Consent Approval Messrs. SENA Technology Co.,Ltd RadiNa Co. ,Ltd TEL:+82-2-463 -0373 FAX:+82- 2-463-0374 PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 2 / 10 RADINA. Co., LTD Table of contents 1. Revision History 2. Product Information 2.1 General Features 2.2 Electrical Specifications 3. Pattern Specifications 4. Mat ching Network 5. Electrical Characteristics 5.1 VSWR 5.2 Smith Chart 5.3 3D-PLOT 5.4 2D-GAIN 6. Passive Measurement 7. Measurement Process PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 3 / 10 RADINA. Co., LTD 1. Revision History NO. Before After Reason Date 1 2 3 4 5 6 7 8 9 10 11 12 13 PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 4 / 10 RADINA. Co., LTD 2. Product Information 2.1 General Features PART NUMBER GradiANT ANTENNA TYPE PCB Pattern Antenna APPLICATIONS Bluetooth 2.2 Electrical Specifications Frequency Range1 (TX) 2400MHz~2485MHz Frequency Range1 (RX) 2400MHz~2485MHz IMPEDANCE 50  V.S.W.R TX 2400MHz 2485MHz 3↓ 3↓ RX 2400MHz 2485MHz 3↓ 3↓ RADIATION PATTERN Omni-directional POLARIZATION Linear PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 5 / 10 RADINA. Co., LTD 3. Pattern Specifications 4. Matching Network Capacitor value can be changed depending on different situation PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 6 / 10 RADINA. Co., LTD 5.Electrical Characterristics 5.1 VSWR 5.2 SMITH CHART PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 7 / 10 RADINA. Co., LTD 5.3 3D-PLOTs 5.4 2D-GAIN PRODUCT APPROVAL SHEET GRSN22077MS11 MODEL NAME ICON REV. 1.0 Page 8 / 10 RADINA. Co., LTD 6. Passive Measurement 1 2 3 4 5 6 7 8 9 10 Frequency [MHz] 2400 2405 2410 2415 2420 2425 2430 2435 2440 2445 Efficiency [dB] -2.45 -2.48 -2.58 -2.66 -2.71 -2.63 -2.37 -2.23 -2.27 -2.47 Efficiency [%] 56.8 56.5 55.2 54.2 53.6 54.6 58.0 59.9 59.3 56.6 TRG θ [dB] -4.90 -4.95 -5.05 -5.18 -5.23 -5.22 -4.90 -4.72 -4.84 -5.06 Gain θ Peak [dB] 0.56 0.33 0.19 -0.01 -0.22 -0.17 0.08 0.45 0.19 0.06 Gain θ Min [dB] -27.42 -26.85 -25.17 -24.45 -22.89 -22.74 -21.53 -19.74 -19.45 -19.54 TRG φ [dB] -6.11 -6.11 -6.21 -6.22 -6.27 -6.10 -5.92 -5.83 -5.76 -5.95 Gain φ Peak [dB] 0.33 0.24 0.17 0.14 0.25 0.59 0.71 0.88 0.89 0.66 Gain φ Min [dB] -18.97 -16.98 -15.05 -15.15 -14.60 -14.91 -14.77 -15.68 -15.75 -17.33 UHRG [dB] -5.33 -5.35 -5.42 -5.47 -5.49 -5.39 -5.10 -4.94 -4.97 -5.15 UHRG/TRG [%] 51.6 51.6 52.0 52.4 52.7 53.0 53.3 53.6 53.6 54.0 H-Plane -3.83 -3.94 -4.13 -4.23 -4.26 -4.26 -3.97 -3.83 -3.98 -4.12 E1-Plane, AVG [dB] -6.47 -6.35 -6.38 -6.56 -6.55 -6.63 -6.27 -6.14 -6.22 -6.59 E2-Plane, AVG [dB] -4.45 -4.44 -4.51 -4.55 -4.65 -4.61 -4.24 -4.16 -4.30 -4.52 Peak Gain [dB] 0.46 0.30 0.19 0.08 0.02 0.24 0.42 0.68 0.56 0.38 Directivity [dB] 2.91 2.77 2.77 2.74 2.73 2.87 2.79 2.91 2.83 2.85 Minimum Gain [dB] -10.96 -10.30 -10.49 -10.81 -10.38 -10.23 -9.80 -9.92 -9.70 -10.28 11 12 13 14 15 16 17 18 19 20 Frequency [MHz] 2450 2455 2460 2465 2470 2475 2480 2485 2490 2497 Efficiency [dB] -2.85 -3.02 -3.03 -3.08 -3.05 -3.39 -3.80 -4.44 -4.61 -4.64 Efficiency [%] 51.9 49.9 49.7 49.1 49.5 45.8 41.7 36.0 34.6 34.4 TRG θ [dB] -5.46 -5.61 -5.70 -5.81 -5.75 -6.12 -6.48 -7.23 -7.42 -7.37 Gain θ Peak [dB] -0.19 -0.16 -0.37 -0.29 -0.15 -0.48 -0.79 -1.36 -1.45 -1.17 Gain θ Min [dB] -19.63 -22.64 -22.60 -23.36 -25.65 -27.01 -29.02 -34.75 -29.36 -25.07 TRG φ [dB] -6.30 -6.50 -6.41 -6.40 -6.40 -6.71 -7.17 -7.68 -7.83 -7.95 Gain φ Peak [dB] 0.32 0.23 0.30 0.20 0.08 -0.14 -0.61 -1.34 -1.53 -1.70 Gain φ Min [dB] -17.22 -19.02 -19.12 -18.49 -18.83 -20.84 -20.55 -21.91 -23.47 -27.77 UHRG [dB] -5.53 -5.69 -5.69 -5.72 -5.66 -5.97 -6.37 -6.99 -7.16 -7.16 UHRG/TRG [%] 53.9 54.1 54.3 54.6 54.9 55.2 55.3 55.5 55.6 56.0 H-Plane -4.56 -4.79 -4.91 -4.99 -5.01 -5.42 -5.82 -6.57 -6.82 -6.91 E1-Plane, AVG [dB] -6.97 -7.01 -7.10 -7.21 -7.02 -7.40 -7.67 -8.41 -8.48 -8.32 E2-Plane, AVG [dB] -4.97 -5.06 -5.18 -5.30 -5.25 -5.64 -6.00 -6.73 -6.88 -6.85 Peak Gain [dB] 0.08 0.05 -0.01 -0.03 -0.02 -0.30 -0.69 -1.34 -1.48 -1.42 Directivity [dB] 2.93 3.07 3.02 3.06 3.03 3.09 3.11 3.10 3.13 3.22 Minimum Gain [dB] -10.95 -11.42 -11.58 -12.42 -12.65 -13.98 -14.28 -15.21 -15.46 -17.21 Average Efficiency -2.98dBi 50.37% Peak Gain 0.68dBi

SPECIFICATION Chip Antenna Manufacturer: Sena Technologies Co., Ltd. Part Number: SENA_003 WRITTEN CHECKED APPROVED Seunghyun Kim Seunghyun Kim Seunghyun Kim March 14, 2025 Sena Technologies Co., Ltd. 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, 06376, South Korea Tel: +82-2-576-7362 Fax: +82-2-573-7710 Website: http://www.sena.com - 2 - CHIP ANTENNA 1. SPECIFICATIONS 3 1.1. Electrical Specifications 1.2. Mechanical Specifications 1.3. Appearance and Dimensions 2. MEASUREMENT 4 2.1. Electrical Characteristics 2.2. Passive Measurement 2.3. Measurement Process 3. RELIABILITY TEST 9 4. SOLDERING RECOMMENDATIOS 9 4.1. Reflow Soldering Profile - 3 - CHIP ANTENNA 1. SPECIFICATIONS 1.1. Electrical Specifications ITEM SPEC. Unit Frequency 2400-2485 MHz Bandwidth @ VSWR 2.5:1 100 MHz Gain Max. 0.3 dBi Polarization Linear Azimuth Beam Pattern Omni-directional Impedance 50 Ω ※ These values are measured on the matched reference test board. 1.2. Mechanical Specifications Electrode Silver Dimensions (L x W x H) 9.0 x 3.0 x 1.2 mm Operating Temperature -40 ~ +85 °C 1.3. Appearance and Dimensions - Laminate: FR-4, 1.20mm - Plating Thickness: 1.5oz (54um) - Board Thickness: 1.30mm (typ.) L 9.0 W 3.0 H 1.2 - 4 - CHIP ANTENNA 2. MEASUREMENT 2.1. Electrical Characteristic 2.1.1. VSWR 2.1.2. Smith chart - 5 - CHIP ANTENNA 2.1.3. 3D-PLOTs 2445MHz 2.1.4. 2D-GAIN - 6 - CHIP ANTENNA 2.2. Passive Measurement 1 2 3 4 5 6 7 8 9 10 Frequency [MHz] 2400 2405 2410 2415 2420 2425 2430 2435 2440 2445 Efficiency [dB] -2.41 -2.33 -2.34 -2.39 -2.35 -2.38 -2.31 -2.11 -1.90 -1.93 Efficiency [%] 57.5 58.5 58.4 57.7 58.2 57.9 58.8 61.5 64.5 64.1 UHRG [dB] -5.82 -5.75 -5.72 -5.78 -5.75 -5.71 -5.64 -5.43 -5.22 -5.29 UHRG/TRG [%] 45.5 45.5 45.9 45.8 45.7 46.4 46.4 46.6 46.6 46.1 H-Plane -13.34 -13.06 -13.56 -13.46 -13.12 -13.94 -14.20 -14.21 -14.01 -13.66 E1-Plane, AVG [dB] -11.44 -11.10 -11.29 -11.48 -11.24 -10.68 -10.87 -11.40 -10.77 -10.78 E2-Plane, AVG [dB] -3.35 -3.30 -3.15 -3.21 -3.26 -3.47 -3.16 -2.91 -2.96 -2.98 Peak Gain [dB] -0.42 -0.10 -0.15 -0.54 -0.42 -0.18 -0.36 -0.03 0.18 0.27 Directivity [dB] 1.99 2.23 2.19 1.85 1.93 2.20 1.95 2.09 2.09 2.20 Minimum Gain [dB] -13.52 -13.07 -13.56 -12.95 -13.37 -14.03 -13.91 -14.99 -12.05 -15.75 11 12 13 14 15 16 17 18 19 20 Frequency [MHz] 2450 2455 2460 2465 2470 2475 2480 2485 2490 2497 Efficiency [dB] -2.08 -2.27 -2.26 -2.16 -2.00 -2.19 -2.38 -2.94 -3.21 -3.21 Efficiency [%] 62.0 59.3 59.4 60.8 63.1 60.4 57.8 50.9 47.8 47.7 UHRG [dB] -5.38 -5.58 -5.61 -5.47 -5.33 -5.56 -5.80 -6.32 -6.61 -6.60 UHRG/TRG [%] 46.7 46.6 46.2 46.6 46.4 46.0 45.5 45.9 45.7 45.8 H-Plane -14.43 -15.07 -14.93 -14.88 -14.67 -14.54 -15.10 -15.58 -15.93 -15.12 E1-Plane, AVG [dB] -11.08 -10.93 -10.99 -10.91 -11.04 -10.56 -11.69 -11.83 -12.04 -11.73 E2-Plane, AVG [dB] -3.04 -3.17 -3.33 -3.29 -2.94 -3.21 -3.48 -3.98 -4.35 -4.12 Peak Gain [dB] -0.14 -0.18 0.06 -0.28 0.18 -0.36 -0.24 -1.19 -1.13 -1.49 Directivity [dB] 1.94 2.09 2.32 1.88 2.18 1.83 2.14 1.75 2.08 1.72 Minimum Gain [dB] -12.93 -14.09 -14.48 -14.72 -16.00 -14.29 -16.20 -15.85 -15.66 -14.38 Average Gain -2.34dBi Peak Gain 0.27dBi

Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] 1 / 60 This test report shall not be reproduced except in full, Without the written approval. TEST REPORT 100, Jangjateo-ro, Hobeop-myeon, Icheon-si, Gyeonggi-do, 17396, Korea Tel: 031-637-8898 / Fax: 0505-116-8895 1. Client • Name ........................ : Sena Technologies Co., Ltd. • Address ..................... : 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Korea 2. Use of Report ............... : FCC Approval 3. Sample Description • Product Name : Wireless Communication Systems • Model Name : HelmLink SL 4. Date of Receipt ............. : 2025-11-21 5. Date of Test ................. : 2025-12-16 ~ 2025-12-19 6. Test Method ................. : FCC Part 15 Subpart C 15.247 7. Test Results ................. : Refer to the test results ※ The results shown in this test report are the results of testing the samples provided. ※ This test report is prepared according to the requirements of ISO / IEC 17025. Affirmation Tested by Jong-Myoung, Shin (Sign) Technical Manager Kyung-Taek, Lee (Sign) Jan 02, 2026 EMC Labs Co., Ltd. (stamp) R Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] Page 2 / 60 This test report shall not be reproduced except in full, Without the written approval. 본 시험성적서는 (주)ABCD의 서면 동의 없이 무단 전제 및 복사를 할 수 없습니다. Contents 1. Applicant & Manufacturer & Test Laboratory Information··································· 4 2. Equipment under Test(EUT) Information······················································· 4 3. Test Summary······················································································· 5 4. Used equipment on test··········································································· 7 5. Antenna Requirement·············································································· 7 6. 20 dB Bandwidth & Occupied Bandwidth (99%)·············································· 9 7. Number of Hopping Frequencies ······························································· 13 8. Time of Occupancy (Dwell Time)································································ 19 9. Carrier Frequencies Separation·································································· 21 10. Peak Output Power ················································································ 25 11. TX Radiated Spurious Emission and Conducted Spurious Emission······················ 32 12. Conducted Emission ·············································································· 54 APPENDIX APPENDIX I TEST SETUP············································································· 57 APPENDIX II UNCERTAINTY·········································································· 59 R Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] Page 3 / 60 This test report shall not be reproduced except in full, Without the written approval. 본 시험성적서는 (주)ABCD의 서면 동의 없이 무단 전제 및 복사를 할 수 없습니다. Version TEST REPORT NO. DATE DESCRIPTION KR0140-RF2601-007 Jan 02, 2026 Initial Issue R Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] Page 4 / 60 This test report shall not be reproduced except in full, Without the written approval. 본 시험성적서는 (주)ABCD의 서면 동의 없이 무단 전제 및 복사를 할 수 없습니다. 1. Applicant & Manufacturer & Test Laboratory Information 1.1 Applicant Information Applicant Sena Technologies Co., Ltd. Applicant Address 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Korea Contact Person Seunghyun Kim Telephone No. +82-2-573-7772 Fax No. +82-2-573-7710 E-mail [email protected] 1.2. Manufacturer Information Manufacturer Sena Technologies Co., Ltd. Manufacturer Address 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Korea 1.3 Test Laboratory Information Laboratory EMC Labs Co., Ltd. Laboratory Address 100, Jangjateo-ro, Hobeop-myeon, Icheon-si, Gyeonggi-do, Republic of Korea Contact Person Jong-Myoung, Shin Telephone No. +82-31-637-8895 Fax No. +82-505-116-8895 FCC Designation No. KR0140 FCC Registration No. 580000 IC Site Registration No. 28751 R Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] Page 5 / 60 This test report shall not be reproduced except in full, Without the written approval. 본 시험성적서는 (주)ABCD의 서면 동의 없이 무단 전제 및 복사를 할 수 없습니다. 2. Equipment under Test(EUT) Information 2.1 General Information Product Name Wireless Communication Systems Model Name HelmLink SL FCC ID S7A-SP173 Rated Voltage DC 3.7 V 2.2 Additional Information Operating Frequency 2 402 MHz ~ 2 480 MHz Number of channel 79 Modulation Type BDR Mode(GFSK), EDR Mode(Pi/4 DQPSK, 8DPSK) Antenna Type & Gain Chip Antenna(with Max gain: 0.27 dBi) Firmware Version 1.0 Hardware Version 1.0 Serial Number M02505 Test Software Lab Test Tool V2.9.1 2.3 Test Frequency Test mode Test Frequency (MHz) Low Frequency Middle Frequency High Frequency GFSK 2 402 2 441 2 480 Pi/4 DQPSK 2 402 2 441 2 480 8DPSK 2 402 2 441 2 480 2.4 Worst-Case BDR GFSK (DH5) EDR 8DPSK (3-DH5) Note: The power measurement has been conducted to determine the worst-case mode from all possible Combinations between available modulations, data rates. 2.5 Mode of operation during the test - The EUT continuous transmission mode during the test with set at Low Channel, Middle Channel, and High Channel. To get a maximum radiated emission levels from the EUT, the EUT was moved throughout the XY, YZ, XZ planes. 2.6 Modifications of EUT - None R Report No.: KR0140-RF2601-007 EMCLabs-QPF-26-25 [ Revision_01 / 2024. 04. 15 ] Page 6 / 60 This test report shall not be reproduc…

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