2A9BA-BTSV401BTS OFFICIAL LIGHT STICK VER.4

Rev 1/26/2023 ELCOMTEC CO., LTD. 231, Dongbu-daero, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-26-2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2A9BA-BTSV401 [ELCOMTEC 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. [ELCOMTEC 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, Gi Bum Kang / Developer Rev 1/26/2023 ELCOMTEC CO., LTD. 231, Dongbu-daero, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-26-2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2A9BA-BTSV401 [ELCOMTEC 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, Gi Bum Kang / Developer

Rev 1/26/2023 ELCOMTEC CO., LTD. 231, Dongbu-daero, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01‐26‐2026 Ref: Attestation Statements Part 2.911(d)(7) Filing Grantee Code: 2A9BA FCC ID: 2A9BA‐BTSV401 Applicant FRN: 0033075227 [ELCOMTEC CO., LTD.] (“the applicant”) certifies that, as of the date of the filing of the application, [FCC US Agent, LLC] is our designated U.S. agent for service of process for the above referenced FCC ID. [ELCOMTEC 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. [FCC US Agent, LLC] 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: FCC US Agent, LLC U.S. Agent FRN: 0033402884 Address: 3722 Illinois Avenue Saint Charles, IL 60174 United States Contact Person: Tim Payne Tel.: (708) 571‐3148 Email: [email protected] Sincerely, [ELCOMTEC CO., LTD.] FCC US Agent, LLC [Gi Bum Kang] Tim Payne [U.S. Agent signature]

ELCOMTEC CO., LTD. 231, Dongbu-daero, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do South Korea Date: 01/26/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Request of Confidentiality FCC ID: 2A9BA-BTSV401 To Whom It may Concern: Pursuant to Sections 0.457 and 0.459 of the Commission`s Rules(CFR 47), and Section 552 (b) (4) of the Freedom of Information Act, ELCOMTEC CO., LTD. hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give ELCOMTEC CO., LTD. temporary confidentiality of commercially sensitive information prior to product release. The requested permanent and Short-Term Confidential exhibits are listed as follows: PERMANENT & SHORT-TERM CONFIDENTIAL LIST Exhibit Description PERMANENT 1 Block Diagram 2 Schematics 3 Part Lists 4 Operation Description 5 - SHORT-TERM 6 Internal Photos 7 External Photos 8 Test-Setup Photos 9 User Manual The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be public before the date of the Grant for this application. Sincerely, Contact Name: Gi Bum Kang Title: Developer

ELCOMTEC CO., LTD. 231, Dongbu-daero, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do South Korea Date: 01/26/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Letter of Authorization We, the undersigned, hereby authorize Geunki Son of Dt&C Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2A9BA-BTSV401 including signing of all documents relating to these matters. Any and all acts carried out by Geunki Son of Dt&C Co., Ltd. on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from ELCOMTEC CO., LTD. “I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a).” Sincerely, Contact Name: Gi Bum Kang Title: Developer

30mm ● Label Size PRODUCT : BTS OFFICIAL LIGHT STICK VER.4MODEL : HYBEBTSOLSV401MANUFACTURER : Elcomtec Co., Ltd. FCC ID: 2A9BA-BTSV401IC: 30000-BTSV401 020-250308 12mm ● Label Location

FCC ID: RF feature Mode Test separation distance (mm) ANT Gain (dBi) Max. power with tune-up tolerance (dBm) Note1 Max. power with tune-up tolerance (mW) Power thresholds SAR test exclusion thresholds BLE GFSK (1 Mbps) 2402.0 ~ 2480.0 5.0 2.77 -12.50 0.0562 0.02 3.00 Zigbee O-QPSK (250 kbps ) 2480.0 ~ 2480.0 5.0 1.48 -12.50 0.0562 0.02 3.00 Note1. Conclusion : 2A9BA-BTSV401 Please refet to the operation description for Max Tune-up power . Transmitting Frequency(MHz) Standalone SAR test exclusion considerations SAR evaluation for general popul ation exposure conditions by me asurement or numerical simulation is not required KDB 447498 D01 clause 4.3.1 Step 1) SAR test exclusion thresho lds for 100MHz to 6GHz at test separation distances ≤ 50 mm [ ( max. power of channel, inclu ding tune-up tolerance, mW ) / ( min. test separation distance, mm ) ] · [ √f(GHz) ] ≤ 3.0 for 1g SAR and ≤ 7.5 for 10g extremity SAR Sample Calculation = [ ( 0.0562mW / 5mm ) ] X [ √2.48GHz ] = 0.02Note. The calculation result was rounded to two decimal place f or comparison.

Antenna Report Ver 1.0 (2025.09.01) 1/11 Page ANTENNA APPROVAL SHEET * Equipment Name: BTS OFFICIAL LIGHT STICK VER.4 *Model Name: HYBEBTSOLSV401 Review Consent Approval 김동현 신유림 서재운 D.H KIM Y.L SHI N J.W SEO 25.09.01 25.09.01 25.09.01 Antenna Report Ver 1.0 (2025.09.01) 2/11 Page - Table of contents - 1. Revision History 2. Product Information 2.1 General Features 2.2 Electrical Specifications 3. Pattern Specifications 4. Matching 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 Antenna Report Ver 1.0 (2025.09.01) 3/11 Page 1. Revision History Ver. Contents Data 1.0 BTS OFFICIAL LIGHT STICK VER.4 25.09.01 Antenna Report Ver 1.0 (2025.09.01) 4/11 Page 2. Product Information 2.1 General Features PART NEMBER BTS OFFICIAL LIGHT STICK VER.4 ANT ANTENNA TYPE PCB PATTERN ANTENNA APPLICATIONS Bluetooth 2.2 Electrical Specifications Frequency Range (Tx) 2400MHz~2480MHz Frequency Range (Rx) 2400MHz~2480MHz IMPEDANCE 50Ω POLARIZATION Linear Antenna Report Ver 1.0 (2025.09.01) 5/11 Page 3. Pattern Specifications 4. Matching Network Antenna Report Ver 1.0 (2025.09.01) 6/11 Page 5. Electrical Characterristics 5.1 VSWR 5.2 SMITH CHART Antenna Report Ver 1.0 (2025.09.01) 7/11 Page 5.3 3D-PLOTs 5.4 2D-Gain Antenna Report Ver 1.0 (2025.09.01) 8/11 Page Antenna Report Ver. 1.0 (2025.09.01) 9/11 Page 6. Passive Measurement Antenna Report Ver.1.0 (2025.09.01) 10/11 Page 7. Measurement Process 7.1 SWR/Return loss Set Condition Network Analyzer Protek A338 Cable RF cable (300 mm) Test condition Antenna Report Ver.1.0 (2025.09.01) 11/11 Page 7.2 Gain Antenna gain is measured in the anechoic chamber of this company. Anechoic Chamber for Antenna Gain Measurement 7.3 Gain Test block diagram

FCC ID: 2A9BA-BTSV401 Report No.: DRTFCC2510-0073(1) IC: 30000-BTSV401 This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-RF-238(07)250909 Pages: 2 / 29 Test Report Version Test Report No. Date Description Revised by Reviewed by DRTFCC2510-0073 Oct, 29. 2025 Initial issue TaeHoon Kwon JaeJin Lee DRTFCC2510-0073(1) Jan, 30. 2026 Add the CAB ID to Section 1.3. TaeHoon Kwon JaeJin Lee FCC ID: 2A9BA-BTSV401 Report No.: DRTFCC2510-0073(1) IC: 30000-BTSV401 This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-RF-238(07)250909 Pages: 3 / 29 Table of Contents 1. General Information .................................................................................... 4 1.1. Description of EUT .......................................................................................................... 4 1.2. Declaration by the applicant / manufacturer ................................................................ 4 1.3. Testing Laboratory .......................................................................................................... 5 1.4. Testing Environment ....................................................................................................... 5 1.5. Measurement Uncertainty............................................................................................... 5 1.6. Test Equipment List ........................................................................................................ 6 2. Test Methodology ........................................................................................ 7 2.1. EUT Configuration ........................................................................................................... 7 2.2. EUT Exercise .................................................................................................................... 7 2.3. General Test Procedures ................................................................................................ 7 2.4. Instrument Calibration .................................................................................................... 7 2.5. Description of Test Modes.............................................................................................. 7 3. Antenna Requirements ............................................................................... 8 4. Summary of Test Results ........................................................................... 9 5. Test Result ................................................................................................. 10 5.1. Maximum Peak Conducted Output Power .................................................................. 10 5.1.1. Test Setup .................................................................................................................. 10 5.1.2. Test Procedures ........................................................................................................ 10 5.1.3. Test Results ............................................................................................................... 10 5.2. 6 dB Bandwidth ............................................................................................................. 12 5.2.1. Test Setup .................................................................................................................. 12 5.2.2. Test Procedures ........................................................................................................ 12 5.2.3. Test Results ............................................................................................................... 12 5.3. Power Spectral Density ................................................................................................. 14 5.3.1. Test Setup .................................................................................................................. 14 5.3.2. Test Procedures ........................................................................................................ 14 5.3.3. Test Results ............................................................................................................... 14 5.4. Unwanted Emissions (Conducted) .............................................................................. 16 5.4.1. Test Setup .................................................................................................................. 16 5.4.2. Test Procedures ........................................................................................................ 16 5.4.3. Test Results ............................................................................................................... 17 5.5. Unwanted Emissions (Radiated) .................................................................................. 19 5.5.1. Test Setup .................................................................................................................. 21 5.5.2. Test Procedures ........................................................................................................ 21 5.5.3. Test Results ............................................................................................................... 23 5.6. AC Power-Line Conducted Emissions ........................................................................ 24 5.6.1. Test Setup .................................................................................................................. 24 5.6.2. Test Procedures ........................................................................................................ 24 5.6.3. Test Results ............................................................................................................... 24 5.7. Occupied Bandwidth ..................................................................................................... 25 5.7.1. Test Setup ...........................................................…

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FCC ID: 2A9BA-BTSV401 Report No.: DRTFCC2510-0072(1) IC: 30000-BTSV401 This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-RF-238(07)250909 Pages: 2 / 41 Test Report Version Test Report No. Date Description Revised by Reviewed by DRTFCC2510-0072 Oct, 29. 2025 Initial issue TaeHoon Kwon JaeJin Lee DRTFCC2510-0072(1) Jan, 30. 2026 Add the CAB ID to Section 1.3. TaeHoon Kwon JaeJin Lee FCC ID: 2A9BA-BTSV401 Report No.: DRTFCC2510-0072(1) IC: 30000-BTSV401 This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-RF-238(07)250909 Pages: 3 / 41 Table of Contents 1. General Information .................................................................................... 4 1.1. Description of EUT .......................................................................................................... 4 1.2. Support Equipment ......................................................................................................... 4 1.3. Testing Laboratory .......................................................................................................... 5 1.4. Testing Environment ....................................................................................................... 5 1.5. Measurement Uncertainty............................................................................................... 5 1.6. Test Equipment List ........................................................................................................ 6 2. Test Methodology ........................................................................................ 7 2.1. EUT Configuration ........................................................................................................... 7 2.2. EUT Exercise .................................................................................................................... 7 2.3. General Test Procedures ................................................................................................ 7 2.4. Instrument Calibration .................................................................................................... 7 2.5. Description of Test Modes.............................................................................................. 7 3. Antenna Requirements ............................................................................... 8 4. Summary of Test Results ........................................................................... 9 5. Test Result ................................................................................................. 10 5.1. Maximum Peak Conducted Output Power .................................................................. 10 5.1.1. Test Setup .................................................................................................................. 10 5.1.2. Test Procedures ........................................................................................................ 10 5.1.3. Test Results ............................................................................................................... 10 5.2. 6 dB Bandwidth ............................................................................................................. 13 5.2.1. Test Setup .................................................................................................................. 13 5.2.2. Test Procedures ........................................................................................................ 13 5.2.3. Test Results ............................................................................................................... 13 5.3. Power Spectral Density ................................................................................................. 16 5.3.1. Test Setup .................................................................................................................. 16 5.3.2. Test Procedures ........................................................................................................ 16 5.3.3. Test Results ............................................................................................................... 16 5.4. Unwanted Emissions (Conducted) .............................................................................. 19 5.4.1. Test Setup .................................................................................................................. 19 5.4.2. Test Procedures ........................................................................................................ 19 5.4.3. Test Results ............................................................................................................... 20 5.5. Unwanted Emissions (Radiated) .................................................................................. 28 5.5.1. Test Setup .................................................................................................................. 30 5.5.2. Test Procedures ........................................................................................................ 30 5.5.3. Test Results ............................................................................................................... 32 5.6. AC Power-Line Conducted Emissions ........................................................................ 33 5.6.1. Test Setup .................................................................................................................. 33 5.6.2. Test Procedures ........................................................................................................ 33 5.6.3. Test Results ............................................................................................................... 33 5.7. Occupied Bandwidth ..................................................................................................... 34 5.7.1. Test Setup ............................................…

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