2AYJI-S032Wireless Subwoofer

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Phone: (708) 571-3148 Email: [email protected] Applicant: Company name: Shenzhen Rango Innovation Technology co., Ltd. Product Description: Wireless Subwoofer FRN: 0030326474 Grantee Code: 2AYJI FCC ID: 2AYJI-S032 Contact Name: Ken Qu Address: 3/F, block A, Coolpad building, Gaoxin North 1st Road, Nanshan District, Shenzhen, Guangdong, China Telephone No: 86-135-7082-6155 Email: [email protected] [Shenzhen Rango Innovation Technology co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [FCC US Agent, LLC] is our designated US agent for service of process for the above referenced FCC ID. [Shenzhen Rango Innovation Technology 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 equipment. [FCC US Agent, LLC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026/07/31 Applicant’s Name: Ken Qu US Agent’s Name: Tim Payne Title: Manager Title: Manager Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Shenzhen Rango lnnovation Technology co., Ltd. Grantee code: 2AYJI FCC ID: 2AYJI-S032 FRN: 0030326474 Contact Name: Ken Qu Address: 3/F, block A, Coolpad building, Gaoxin North 1st Road, Nanshan District, Shenzhen, Guangdong, China Telephone No: 86-135-7082-6155 Fax No: 0755-2660-2007 Email: [email protected] i. [Shenzhen Rango lnnovation Technology 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. The applicant must sign this certification. ii. [Shenzhen Rango lnnovation Technology co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Shenzhen Rango lnnovation Technology 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 an entity producing “covered” equipment. Date: 2026-07-31 Applicant’s Name: Ken Qu Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Shenzhen Rango lnnovation Technology co., Ltd Code 00018768 Ed. 1 Item 1. The device is able to install software/program installation? ☐Yes, go to Item 2. ☒No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Device Wireless Subwoofer Company name Shenzhen Rango lnnovation Technology co., Ltd Grantee code 2AYJI FCC ID 2AYJI-S032 FRN 0030326474 Contact name Ken Qu Address 3/F, block A, Coolpad building, Gaoxin North 1st Road, Nanshan District, Shenzhen, Guangdong, China Telephone number 86-135-7082-6155 [email protected] Chipset/module information ETK52 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 3 2 Operating System: iOS® 17 N/A # General Requirements (For Linux system) Yes / No or N/A Comments 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. 4 ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software Item 3. Connectivity Capabilities: # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: Ken Qu Date: 2026-07-31 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

TCB CALL página 1 File FCC ID: 2AYJI-S032 Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. On the official register from : https://opencorporates.com/companies/us_il/LLC_12842678 In google: TCB CALL página 2 Bank information TCB CALL página 3 TCB CALL página 4 TCB CALL página 5 TCB CALL página 6 TCB CALL página 7 TCB CALL página 8 TCB CALL página 9 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "C5266091_X23_Ed1_US_Agent_Letter" >

C5266091_X10_Ed.2 1/1 Shenzhen Rango lnnovation Technology co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026-07 -31 Subject: Request for Confidentiality FCC ID: 2AYJI-S032 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☒ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☒ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of _180__ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Ken Qu Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < Shenzhen Rango lnnovation Technology co., Ltd. > Company: Shenzhen Rango lnnovation Technology co., Ltd. Address: 3/F, block A, Coolpad building, Gaoxin North 1st Road, Nanshan District, Shenzhen, Guangdong, China Product Name: Wireless Subwoofer Model Number: S032 FCC Identifier: 2AYJI-S032 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Ken Qu Date: 2026-07-31 Title: Manager Signature of applicant:

C5266091_X13_Ed.1 1/1 < Shenzhen Rango lnnovation Technology co., Ltd.> FCC Software Configuration Control Declaration Date: 2026-08-11 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Attn: OET Dept. Product/ Model Number: Wireless Subwoofer / S032 Regarding FCC Country Code Selection guidelines identified in KDB 594280. “All applications for equipment authorization for transmitters that can have radio parameters, or other technical parameters, reported to the Commission set by software must have an attestation indicating that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified.” We declare that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. Signature of applicant Name: Ken Qu Title: Manager

Label Location On EUT Label

RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in KDB 447498 D01 V06 and §1.1307(b) CFR Title 47 §2.1091(b): (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC ID: 2AYJI-S032 EUT Specification EUT Wireless Subwoofer Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz BT: 2.402GHz~2.480GHz Others: 5.8G ISM Proprietary Band Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result 5.8G worst case: Operating Mode Channel Frequency Measured Power Tune up tolerance Max. Tune up Power Antenna Gain Power density at 20cm Power density Limits (mW/cm 2 ) (MHz) (dBm) (dBm) (dBm) (dBi) (mW/ cm 2 ) 5.8G 5788 2.75 2.75±1 3.75 1.17 0.0006 1 Test Result: Pass

TESTREPORT ReportNo.:8429EU010403W Applicant:ShenzhenRangoInnovationTechnologyco., Ltd. Address:3/F, blockA, Coolpadbuilding,GaoxinNorth1st Road, NanshanDistrict,Shenzhen,China ProductName:WirelessSubwoofer ModelNo.:S032 Trademark:OXS FCC ID:2AYJI-S032 Test Standard(s):47 CFRPart 15E Test Result:Pass Dateof Receipt:Mar. 04, 2026 Test Date:Mar. 04, 2026- May 20, 2026 Dateof Issue:Jul. 28 , 2026 ISSUEDBY: SHENZHENEU TESTINGLABORATORYLIMITED Preparedby:Reviewedand Approvedby: MikeyZhu/ EngineerSallyZhang/Manager Page2 of 59ReportNo.: 8429EU010403W TRF Version:A01 RevisionRecord ReportVersionIssuedDateDescriptionStatus V0Jul. 28 , 2026OriginalValid Page3 of 59ReportNo.: 8429EU010403W TRF Version:A01 Tableof Contents 1COVERPAGE...................................................................................................................................................1 2GENERALINFORMATION........................................................................................................................5 2.1APPLICANTINFORMATION...................................................................................................................5 2.2MANUFACTURERINFORMATION...........................................................................................................5 2.3FACTORYINFORMATION......................................................................................................................5 2.4GENERALDESCRIPTIONOFE.U.T......................................................................................................5 2.5TECHNICALINFORMATIONOFE.U.T....................................................................................................6 3TESTSUMMARY.......................................................................................................................................7 3.1TESTSTANDARD................................................................................................................................7 3.2TESTVERDICT...................................................................................................................................7 3.3TESTLABORATORY............................................................................................................................8 4TESTCONFIGURATION...........................................................................................................................9 4.1TESTENVIRONMENT...........................................................................................................................9 4.2TESTEQUIPMENT...............................................................................................................................9 4.3DESCRIPTIONOFSUPPORTUNIT......................................................................................................11 4.4TESTMODE.....................................................................................................................................11 4.5DESCRIPTIONOFCALCULATION........................................................................................................11 4.5.1FieldStrengthCalculation..................................................................................................11 4.5.2DisturbanceCalculation.....................................................................................................11 4.6MEASUREMENTUNCERTAINTY..........................................................................................................12 4.7DEVIATIONFROMSTANDARDS..........................................................................................................12 4.8ABNORMALITIESFROMSTANDARDCONDITION..................................................................................12 5RADIOSPECTRUMMATTERTESTRESULTS(RF) ............................................................................13 5.1CONDUCTEDEMISSIONATACPOWERLINE......................................................................................13 5.1.1Test Specification...............................................................................................................13 5.1.2E.U.T.Operation.................................................................................................................13 5.1.3Test SetupDiagram...........................................................................................................13 5.1.4Test Data ............................................................................................................................13 5.2DUTYCYCLE....................................................................................................................................16 5.2.1Test Specification...............................................................................................................16 5.2.2E.U.T.Operation.................................................................................................................16 5.2.3Test SetupDiagram...........................................................................................................16 5.2.4Test Data ............................................................................................................................16 5.3EMISSIONBANDWIDTHANDOCCUPIEDBANDWIDTH...........................................................................17 5.3.1Test Specification...............................................................................................................17 5.3.2E.U.T.Operation.................................................................................................................18 5.3.3Test SetupDiagram...........................................................................................................18 5.3.4Test Data ............................................................................................................................18 5.4MAXIMUMCONDUCTEDOUTPUTPOWER..............................................…

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Antenna Describe 1:Antenna describe: Antenna Plate PCB Atenna Model HU305 Antenna Gain <1.17dbi Frequency Range 5725~5850 MHZ Connect Type Direct Company Name Everestek inc. 2F.-1, No. 5, Tai-Yuen 1st St., Zhubei City, Hsinchu County 2:External view drawing Picture of Antenna Everestek 5GHz MU305 Module 5.125-5.25GHz Maximum antenna gain: 1.09 dB Antenna Reflection Loss < -10dB 5.725-5.850GHz Maximum antenna gain: 1.17 dB Antenna Reflection Loss < -10dB MU305-5125 MHz MU305-5135 MHz MU305-5250MHz MU305-5725MHz MU305-5780MHz MU305-5850MHz