2BADE-SELEDZ4OEMLED 4 Zone Controller OEM version

Sound Extreme Inc. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Sound Extreme Inc. Address:9212 Fry Road, Suite 105-351, Cypress, TX 77433, United States of America Product Name: LED 4 Zone Controller OEM version FCCID: 2BADE-SELEDZ4OEM Model(s): SEI-SELEDZ4OEM 2.911(d)(5)(i) Equipment Type We, Sound Extreme Inc. (“the applicant”) certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Jamie Florczak Date: 1/14/2026 Title and Company name: EVP, Operations/ Sound Extreme Inc. NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Sound Extreme Inc. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Sound Extreme Inc. Address: 9212 Fry Road, Suite 105-351, Cypress, TX 77433, United States of America Product Name: LED 4 Zone Controller OEM version FCCID: 2BADE-SELEDZ4OEM Model(s): SEI-SELEDZ4OEM 2.911(d)(5)(ii) Applicant filing We, Sound Extreme Inc. (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Jamie Florczak Date: 1/14/2026 Title and Company name: EVP, Operations/ Sound Extreme Inc. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Sound Extreme Inc. 9212 Fry Road, Suite 105-351 Cypress TX 77433 United States of America Date: 1/14/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BADE-SELEDZ4OEM FRN: 0033445503 US Agent – Attestation Statement / Part 2.911(d)(7) Sound Extreme Inc. certifies, that as of 2026-1-14, we have designated Sound Extreme Inc. to accept service of process on our behalf for FCC ID: 2BADE-SELEDZ4OEM Sound Extreme Inc., accepts to maintain an agent of s ervice of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission- related administrative or judicial proceeding involving the equipment, whichever is later. Sound Extreme Inc. accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of Sound Extreme Inc. for FCC ID: 2BADE-SELEDZ4OEM Designated Agent Information: Company Name: Sound Extreme Inc. FRN: 0033445503 Address: 9212 Fry Road, Suite 105-351, Cypress, TX 77433, United States of America Contact Person: Jamie Florczak Phone: 858-2089530 Email: [email protected] S incerely, Company: Sound Extreme Inc. Designated Agent: Sound Extreme Inc. Company Representative: Jamie Florczak Designated Agent Representative: Jamie Florczak Signature: Signature:

Sound Extreme Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 1/14/2026 Subject: Request for Confidentiality FCC ID: 2BADE-SELEDZ4OEM To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jamie Florczak Title: EVP, Operations Email:[email protected]

Sound Extreme Inc. Letter of Authorization Company: Sound Extreme Inc. Address:9212 Fry Road, Suite 105-351, Cypress, TX 77433, United States of America Product Name: LED 4 Zone Controller OEM version Model Number(s): SEI-SELEDZ4OEM Product Description: LED 4 Zone Controller OEM version We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 1/14/2026 Name: Jamie Florczak Title: EVP, Operations Company: Sound Extreme Inc.

FCC ID: 2BADE-SELEDZ4OEM Maximum Permissible Exposure (MPE) 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 §1.1307(b) Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method E (V/m) ＝ d GP**30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 *377 **30 D GP From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. Measurement Result Operation Frequency: 2402MHz~2480MHz Antenna gain: 1.12dBi; R=20cm BLE: conducted power Evaluation result Power density (dBm) (mW)(dBi)Numeric 2402 8.54 8±1 9 7.9431.121.290.00201 2440 8.23 8±19 7.9431.121.290.00201 2480 7.59 7±18 6.3101.121.290.00161 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm)(mW/cm2 ) (mW/cm2) Antenna Gain GFSK1M Max tune-up power Note: The tune-up power was declared by manufacturer. Conclusion: Compliance RF exposure. Signature: Date: 2025-12-18 NAME AND TITLE (Please print or type): alex li/Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.

Parameter Testing Report Project:WIFI Antenna Product Description 2400-2500MHz Report Date: 2022.02.24 Report Version: 1.0 Prepared by: Patrick Approved by: Jammy 2022.10.28 2 Contents: 1. Testing Item & Equipment 2. S-Parameters Test Results 3. GAIN & Efficiency TEST Antenna appearance figure COANT1 11mm 0.6mm 3 1. Testing Item & Equipment 4 2.VSWR TEST GAIN& Efficiency TEST 参数 \ 频率 (mhz) 2400 2450 2500 Peak Gain(dBi) 0.69 0.72 1.12 Efficiency(%) 56.48 58.21 61.38

Report No.: N25111704906E Version.1.3 Page 1 of 40 RADIO TEST REPORT FCC ID: 2BADE-SELEDZ4OEM Product: LED 4 Zone Controller OEM version Trade Mark: SOUNDEXTREME BY ECOXGEAR /E-Z-GO /CUSHMAN Model No.: SEI-SELEDZ4OEM Family Model: N/A Report No.: N25111704906E Issue Date: Nov. 25, 2025 Prepared for Sound Extreme Inc. 9212 Fry Road, Suite 105-351, Cypress, TX 77433, United States of America Prepared by Shenzhen NTEK Testing Technology Co., Ltd. No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China Tel. 0755-2320 0050 Website: http://www.ntek.org.cn Report No.: N25111704906E Version.1.3 Page 2 of 40 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 4 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 5 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 6 3.1 FACILITIES..................................................................................................................................................... 6 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 6 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 6 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 10 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................................... 10 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 11 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 12 7 TEST REQUIREMENTS .................................................................................................................................... 14 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 14 7.1.1 Applicable Standard .................................................................................................................................. 14 7.1.2 Conformance Limit ................................................................................................................................... 14 7.1.3 Measuring Instruments ............................................................................................................................. 14 7.1.4 Test Configuration .................................................................................................................................... 14 7.1.5 Test Procedure ........................................................................................................................................... 14 7.1.6 Te s t R e s u l ts ................................................................................................................................................ 15 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.2.1 Applicable Standard .................................................................................................................................. 16 7.2.2 Conformance Limit ................................................................................................................................... 16 7.2.3 Measuring Instruments ............................................................................................................................. 17 7.2.4 Test Configuration .................................................................................................................................... 17 7.2.5 Test Procedure ........................................................................................................................................... 18 7.2.6 Te s t R e s u l ts ................................................................................................................................................ 19 7.3 6DB BANDWIDTH ....................................................................................................................................... 25 7.3.1 Applicable Standard .................................................................................................................................. 25 7.3.2 Conformance Limit ................................................................................................................................... 25 7.3.3 Measuring Instruments ............................................................................................................................. 25 7.3.4 Te s t S e t u p .................................................................................................................................................. 25 7.3.5 Test Procedure ........................................................................................................................................... 25 7.3.6 Te s t R e s u l ts ................................................................................................................................................ 25 7.4 DUTY CYCLE ...............................…

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