2A78WLUMIOBluetooth speaker

Rev 1/26/2023 EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 12-04-2025 Ref: Attestation Statements Part 2.911(d)(7) Filing Grantee Code: 2A78W FCC ID: 2A78WLUMIO Applicant FRN: 0032738205 [EMSONIC] (“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 Grantee Code. [EMSONIC] 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 Grantee Code. 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, [EMSONIC] FCC US Agent, LLC [Jihyun Koo] Tim Payne [U.S. Agent signature]

Rev 1/26/2023 EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 12-04-2025 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2A78WLUMIO [EMSONIC] (“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. [EMSONIC] (“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, Jihyun Koo Rev 1/26/2023 EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 12-04-2025 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2A78WLUMIO [EMSONIC] (“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, Jihyun Koo

EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Date: 12/04/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Request of Confidentiality FCC ID: 2A78WLUMIO 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, EMSONIC 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 EMSONIC 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 Part Location 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: Jihyun Koo Title: Research Engineer

EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Date: 12/04/2025 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: 2A78WLUMIO 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 EMSONIC “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: Jihyun Koo Title: Research Engineer

E This device complies paet 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. R-R-em1-SonoLight

시 점 확 인 필 정 부 시 점 확 인 센 터 진본 2025-12-09 15:59:46 KST Report No.: DREKFCC2508-0093(1) ( FCC ID : 2A78WLUMIO / IC : 28870-LUMIO) This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-EM-223(00)220629 Pages: 2 / 34 CONTENTS 1. General Remarks ...................................................................................................................... 3 2. Test Laboratory ......................................................................................................................... 3 3. General Information of EUT...................................................................................................... 4 4. EUT Operations and Test Configurations ............................................................................... 5 4.1 Principle of Configuration Selection ....................................................................................... 5 4.2 EUT Operation Mode ............................................................................................................. 5 4.3 Test Configuration Mode ........................................................................................................ 5 4.4 Supported Equipment ............................................................................................................ 6 4.5 EUT In/Output Port ................................................................................................................ 6 4.6 Test Voltage and Frequency .................................................................................................. 6 5. Test Summary ........................................................................................................................... 7 6. Test Environment ...................................................................................................................... 8 7. Test Results : Emission............................................................................................................ 9 7.1 Conducted Disturbance ......................................................................................................... 9 7.2 Radiated Disturbance .......................................................................................................... 12 8. Revision History...................................................................................................................... 34 Report No.: DREKFCC2508-0093(1) ( FCC ID : 2A78WLUMIO / IC : 28870-LUMIO) This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-EM-223(00)220629 Pages: 3 / 34 1. General Remarks This report contains the result of tests performed by : Dt&C Co., Ltd. 42, Yurim-ro, 154 beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea http://www.dtnc.net Tel: +82-31-321-2664 Fax: +82-31-321-1664 2. Test Laboratory Address of Laboratory Branch site-1 46, Yurim-ro 154 beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Republic of Korea Satellite facilities-1 42, Yurim-ro 154 beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Republic of Korea Satellite facilities-3 38, Yurim-ro 154 beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Republic of Korea Satellite facilities-4 28, Baengnyeong-ro 20 beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, Republic of Korea Dt&C Co., Ltd. has been accredited / filed / authorized by the agencies listed in the following table; Certificate Nation Agency Code Remark Accreditation Korea KOLAS 393 ISO/IEC 17025 South Africa SABS 0006 ISO/IEC 17025 Ghana NCA NCA agreement 23 rd ,Oct,2018 - Site Filing USA FCC KR0034 Designation 704742 Registration No. Canada IC KR0034 Designation Japan VCCI C-11427, R-13385, R-14076, R-14180, R-14496, T-11442, G-10338, G-10754, G-10815, G-20051 Registered Certification Korea KC KR0034 Designation Germany TUV CARAT 089112 0012 Rev.00 ISO/IEC 17025 Russia RMRS 22.03.01.01196.296 ISO/IEC 17025 Quality control in the testing laboratory is implemented as per ISO/IEC 17025 which is the “General requirements for the competent of calibration and testing laboratory”. Report No.: DREKFCC2508-0093(1) ( FCC ID : 2A78WLUMIO / IC : 28870-LUMIO) This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-EM-223(00)220629 Pages: 4 / 34 3. General Information of EUT Applicant EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Manufacturer EMSONIC 54-8, Cheomdangieop 3-ro, Sandong-eup, Gumi-si, Gyeongsangbuk-do, South Korea Factory P.T.EMSONIC JI. Timor Blok E5, MM2100 Industrial Town, Jatiwangi Cikarang Barat, Bekasi, Jawa Barat, Indonesia Product Name PORTABLE BLUETOOTH SPEAKER Model Name LUMIO Add Model Name None Add Model Difference None Software Version SW V1.0 Hardware Version HW V1.0 Maximum Internal Frequency 24 MHz Classification Class A Class B Rated Power USB : DC 5 V / Battery 3.7 V FCC ID 2A78WLUMIO IC 28870-LUMIO Remarks * Wireless Frequency Bluetooth : (2 402 ~ 2 480) MHz Related Submittal(s) / Grant(s) Original submittal only Report No.: DREKFCC2508-0093(1) ( FCC ID : 2A78WLUMIO / IC : 28870-LUMIO) This test report is prohibited to copy or reissue in whole or in part without the approval of Dt&C Co., Ltd. TRF-EM-223(00)220629 Pages: 5 / 34 4. EUT Operations and Test Configurations 4.1 Principle of Configuration Selection Emission : The equipment under test (EUT) was configured to measure its highest possible radiation level. The test modes were adapted accordingly in reference to the instructions for use. For each testing mode different configurations were used, Refer to the individual tests. 4.2 EUT Operation Mode No. Mode Description 1 Bluetooth The EUT is in a state where its internal battery is being charged through a DC power supply. The EUT is paired with a smartphone via Bluetooth, and a 1 kHz audio signal is continuously played from the smartphone and output through the EUT. 4.3 Test Configuration Mode No. Mo…

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Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz -1.73 -0.84 -0.68 -6.15 -3.70 -2.32 MAX. Gain -0.68 Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Address No. 333 Kexing Road, Xiangzhou District, Zhuhai City, Guangdong Province Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -1.73178 -30.0815 -8.48713 2450 -0.845801 -38.5605 -7.88012 2500 -0.685586 -24.0318 -6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -6.1530 -24.1420 -13.0295 2450 -3.7054 -26.5836 -10.6700 2500 -2.32122 -30.4301 -9.70536 ANT Test Labs：Attestation of Global Compliance Co., Ltd.