2AKLU-WH98PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM

DIGI-MARKS TECHNOLOGY LIMITED 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: DIGI-MARKS TECHNOLOGY LIMITED Address: 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China Product Name: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM FCC ID: 2AKLU-WH98 Model(s): WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115 2.911(d)(5)(i) Equipment Type We, [DIGI-MARKS TECHNOLOGY LIMITED] (“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: James Jiang Date: Jan. 15, 2026 Title: Sales Director Company name: DIGI-MARKS TECHNOLOGY LIMITED Signature: 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

DIGI-MARKS TECHNOLOGY LIMITED 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: DIGI-MARKS TECHNOLOGY LIMITED Address: 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China Product Name: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM FCC ID: 2AKLU-WH98 Model(s): WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115 2.911(d)(5)(ii) Applicant filing We, [DIGI-MARKS TECHNOLOGY LIMITED] (“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: James Jiang Date: Jan. 15, 2026 Title: Sales Director Company name: DIGI-MARKS TECHNOLOGY LIMITED Signature: 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

DIGI-MARKS TECHNOLOGY LIMITED 2.911 (d)(7)USA Agentv1.3 Section 2.911(d)(7) USA Agent for Service of Process Company name: DIGI-MARKS TECHNOLOGY LIMITED Address: 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China Product Name: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM FCC ID: 2AKLU-WH98 Model(s): WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115 2.911(d)(7) USA Designated Agent for Service of Process We, [DIGI-MARKS TECHNOLOGY LIMITED] (“the applicant”) designate [Opuor INC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service 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. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address 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. DIGI-MARKS TECHNOLOGY LIMITED 2.911 (d)(7)USA Agentv1.3 USA Agent Company name: Opuor INC USA Address: 6510 S Academy Blvd Ste A 642, Colorado Springs, CO 80906, United States FRN Number: 0036496966 Contact Name: Shuiqing Yang Telephone No: (650) 315-6698 Email: [email protected] Applicant Company name: DIGI-MARKS TECHNOLOGY LIMITED Address: 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China FCC Registration Number (FRN): 0026099424 Grantee Code: 2AKLU Contact Name: James Jiang Telephone No: 020-36969029 Email: [email protected] Signature: Title: Manager Signature: Title: Sales Director Date: Jan. 15, 2026 Date: Jan. 15, 2026 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

DIGI-MARKS TECHNOLOGY LIMITED Agent Authorization Company: DIGI-MARKS TECHNOLOGY LIMITED Address: 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China Product Name: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM Model Number(s): WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115 Product Description: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM 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: Jan. 15, 2026 Name: James Jiang Title: Sales Director Company: DIGI-MARKS TECHNOLOGY LIMITED

DIGI-MARKS TECHNOLOGY LIMITED Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jan. 15, 2026 Subject; Request for Confidentiality FCC ID: 2AKLU-WH98 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 Tune-up Procedure 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: James Jiang Title: Sales Director

DIGI-MARKS TECHNOLOGY LIMITED Model Difference Declaration To Whom It May Concern, We, DIGI-MARKS TECHNOLOGY LIMITED (PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM); Trade Mark: marengo; Model Number: WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115; All model’s the function, software and electric circuit are the same, only with product color and model named different. Test sample model: WH98. Please contact me if you have any question. Signature: Date: Jan. 15, 2026 Name: James Jiang Title: Sales Director

FCC ID LABEL: Ca. 20mm x 50mm Label Location FCC ID: 2AKLU-WH98

FCC RF Exposure Product Name: PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM FCC ID: 2AKLU-WH98 Model(s): WH98 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance (mm) Result Limit SAR Test Exclusion 658.3 -12.58-13±1(-12) 0.063 5 0.01 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2511246294-E, antenna gain = 1dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.01 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

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Page 1 of 38 Report No.: HK2511246294-E FCC Test Report Test Report On Behalf of DIGI-MARKS TECHNOLOGY LIMITED For PROFESSIONAL DYNAMIC WIRELESS MICROPHONE SYSTEM Model No.: WH98, WH99, WH100, WH101, WH102, WH103, WH105, WH106, WH107, WH108, WH109, WH110, WH111, WH112, WH113, WH115 FCC ID: 2AKLU-WH98 Prepared For: DIGI-MARKS TECHNOLOGY LIMITED 9-1 Dongguan Erdui Huancun Road, Xinya Street, Huadu District, Guangzhou, Guangdong, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Nov. 24, 2025 ~ Jan. 05, 2026 Date of Report: Jan. 05, 2026 Report Number: HK2511246294-E Applica n Address . Manufa c Address . Product Trade M a Product N Model an Standard This publ the Shen z of the ma not assum material d Date of T Date (s) o Date of Is Te s t R e su nt’s Name .. .................. cturer's Nam .................. Descripti o ark ............... Name .......... nd/or Type R ds .............. ication ma y zhen HUAK aterial. Shen me liability f due to its pl Test ............ of performan ssue ........... ult ............... T T A ............... : ............... : me .......... : ............... : on .................. : .................. : Reference : ............... : y be reprodu K Testing Te nzhen HUA for damage acement a n .................. nce of tests .................. .................. Testing Eng Technical M Authorized S Pa Test Re DIGI-MA 9-1 Don District, DIGI-M A 9-1 Don District, mareng o PROFES SYSTEM WH98, W WH106, WH113, FCC Ru uced in who echnology C K Testing Te s resulting f nd context. .............. : .............. : .............. : .............. : gineer Manager Signatory age 2 of 38 esult Cer ARKS TECH gguan Erdu Guangzhou ARKS TECH gguan Erdu Guangzhou o SSIONAL D M WH99, WH WH107, W WH115 les and Re g ole or in par Co., Ltd. is a Technology C from the rea Nov. 24, 2 0 Jan. 05, 20 Pass rtification HNOLOGY ui Huancun u, Guangdo HNOLOGY ui Huancun u, Guangdo DYNAMIC W 100, WH10 WH108, WH gulations Pa rt for non-co acknowledge Co., Ltd. tak ader's interp 025 ~ Jan. 0 026 Len Lia o Sliver Wa Jason Zho Repo n LIMITED Road, Xin y ong, China LIMITED Road, Xin y ong, China WIRELESS 1, WH102, 109, WH11 art 15 Subpa ommercial p ed as copyr kes no resp pretation of 05, 2026 o an ou rt No.: HK25 ya Street, H ya Street, H MICROPH WH103, W 0, WH111, art C Sectio purposes as right owner ponsibility fo f the reprod 511246294-E uadu uadu ONE WH105, WH112, on 15.236 s long as and sourc e or and will uced E e Page 3 of 38 Report No.: HK2511246294-E Table of Contents 1. Summary ..................................................................................................................................................... 5 1.1 Test Procedures and Results .............................................................................................................. 5 1.2 Information of the Test Laboratory ...................................................................................................... 5 1.3 Measurement Uncertainty ................................................................................................................... 6 2. General Information ................................................................................................................................... 7 2.1 General Description of EUT ................................................................................................................ 7 2.2 Carrier Frequency of Channels ........................................................................................................... 8 2.3 Operation of EUT during Testing ........................................................................................................ 8 2.4 Description of Test Setup .................................................................................................................... 9 2.5 Description of Support Units ............................................................................................................. 10 2.6 Measurement Instruments List .......................................................................................................... 11 3. Test Results and Measurement Data ..................................................................................................... 12 3.1 AC Conducted Emissions Test ......................................................................................................... 12 3.2 Radiated Emission Test .................................................................................................................... 15 3.3 Conducted Output Power .................................................................................................................. 21 3.4 Occupied Bandwidth Measurement .................................................................................................. 22 3.5 Necessary Bandwidth ........................................................................................................................ 27 3.6 Frequency Stability ............................................................................................................................ 31 3.7 Antenna Requirement ....................................................................................................................... 35 4. Photograph of Test .................................................................................................................................. 36 5. Photograph of EUT .................................................................................................................................. 38 Page 4 of 38 Report No.: HK2511246294-E ** Issued History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Jan. 05, 2026 Jason Zhou Page 5 of 38 Report No.: HK2511246294-E 1. Summary 1.1 Test Proced…

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Test Model: WH98 Radiated Emission AC Conducted Emission RF Conducted Emission