2BD6J-WLMFHigh Speed USB Receiver

AttestationStatements 2024-01-04 TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA RE:AttestationStatementsPart2.911(d)(7)requestfor(FCCID:2BD6J-WLMF) JiangxiDewaElectronicIndustryCo.,Ltd.,theundersigned,herebyauthorizeHOPEK CORPORATIONINCtoactasourdesignatedU.S.agentforserviceofprocess,Jiangxi DewaElectronicIndustryCo.,Ltd.acceptstomaintainanagentfornolessthanone yearafterthegranteehasterminatedallmarketingandimportationortheconclusion ofanyCommission-relatedproceedinginvolvingtheequipment. HOPEKCORPORATIONINCacceptstheresponsibilitytoactasdesignatedU.S.agentfor serviceofprocess. ApplicantInformation： Companyname:JiangxiDewaElectronicIndustryCo.,Ltd. ContactName:MinHuang FRN:0034632430 Address:1F,6B,PhaseII,Dexinghigh-techindustrialpark,DexingCity, TelephoneNo:15923067519 Email:[email protected] Signature: MinHuang U.S.AgentInformation: CompanyName:HOPEKCORPORATIONINC Address:4358SBANNOCKSTENGLEWOOD,CO80110UnitedStates FRN:0034562900 ContactName:PeterDavis Tel.:561-235-6113 Email:[email protected] Signedby(printedname):PeterDavis Signature:

Jiangxi Dewa Electronic Industry Co. , Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date:1/5/2024 FCC ID: 2BD6J-WLMF Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Jiangxi Dewa Electronic Industry Co. , Ltd. 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Jiangxi Dewa Electronic Industry Co. , Ltd. 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. Applicant: Jiangxi Dewa Electronic Industry Co. , Ltd. Address: 1F, 6B, Phase II, Dexing high-tech industrial park, Dexing City, Contact Person: Min Min Huang Tel.: 15923067519 Email: [email protected] Sincerely, Signature:

1 Antenna specification 1. Antenna Type：PIFA Manufacturer：Yanshan Xingao electronic Technology Co., LTD 2. Antenna Size 3.Antenna frequency, efficiency, gain。 ADD.:Bubiao undertakes industrial transfer industrial park in Yanshan County, Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province,China UNIT: mm 2 4. Antenna 2D&3D 5. Antenna standing wave ratio Phi 0 2D图 Phi 90 2D图 Theta 90 2D图 2400 2450 2500 3 6. Antenna matching circuit 7．Test environment

Jiangxi Dewa Electronic Industry Co. , Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: January 5, 2024 Subject; Request for Confidentiality FCC ID: 2BD6J-WLMF 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: Min Huang Title: Manager

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Jiangxi Dewa Electronic Industry Co. , Ltd. Date：1/5/2024 Product Model Number: WL-MF FCC ID：2BD6J-WLMF To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. Signature: By: Min Huang Contact Listed on FCC Wesbite Title: Manager Email: [email protected] On behalf of: Jiangxi Dewa Electronic Industry Co. , Ltd.

Page 1 of 3 Report No.: LGT23L059 Appendix - External Photographs of EUT Constructional Details Model: WL-MF Photo 1 Photo 2 Page 2 of 3 Report No.: LGT23L059 Photo 3 Photo 4 Page 3 of 3 Report No.: LGT23L059 Photo 5 Photo 6

Page 1 of 4 Report No.: LGT23L059 Appendix - Internal Photographs of EUT Constructional Details Model: WL-MF Photo 1 Photo 2 Page 2 of 4 Report No.: LGT23L059 Photo 3 Photo 4 ANT Page 3 of 4 Report No.: LGT23L059 Photo 5 Photo 6 Page 4 of 4 Report No.: LGT23L059 Photo 7 Photo 8

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: High Speed USB Receiver Model Name: WL-MF FCC ID: 2BD6J-WLMF Issued For : Jiangxi Dewa Electronic Industry Co. , Ltd. 1F, 6B, Phase II, Dexing high-tech industrial park, Dexing City, Jiangxi Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT23L059HA02 Sample Received Date: Dec. 14, 2023 Date of Test: Dec. 14, 2023 – Jan. 03, 2024 Date of Issue: Jan. 03, 2024 Report No.: LGT23L059HA02 Page 2 of 9 TEST REPORT CERTIFICATION Applicant: Jiangxi Dewa Electronic Industry Co. , Ltd. Address: 1F, 6B, Phase II, Dexing high-tech industrial park, Dexing City, Jiangxi Manufacture: RUIWA TECHNOLOGIES(CHONGQING)CO.,LTD Address: No. 36 Fengsheng Road, Jinfeng Town, Chongqing high-tech zone Product Name: High Speed USB Receiver Trademark: Model Name: WL-MF Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT23L059HA02 Page 3 of 9 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Report No.: LGT23L059HA02 Page 4 of 9 Revision History Rev. Issue Date Revisions 00 Jan. 03, 2024 Initial Issue Report No.: LGT23L059HA02 Page 5 of 9 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: High Speed USB Receiver Trademark: Model Name: WL-MF Series Model: N/A Model Difference: N/A Frequency Bands: Bluetooth 2402-2480MHz Rating: DC 5V Hardware Version: N/A Software Version: N/A 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT23L059HA02 Page 6 of 9 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Report No.: LGT23L059HA02 Page 7 of 9 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 f(GHz) is the RF channel transmit frequency in GHz. Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Report No.: LGT23L059HA02 Page 8 of 9 2.3 TEST RESULT Turn up Result Mode Turn up Power 2.4G-GFSK -0.5±1dBm Report No.: LGT23L059HA02 Page 9 of 9 The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) Estimated SAR Limit Ratio Result 2.4G 2402 0.50 1.12 0.348 3 0.116 Pass Note: 1. The estimated SAR≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm, complies with the exemption requirements. ※※※※※END OF THE REPORT※※※※※

Page 1 of 2 Report No.: LGT23L059 Appendix - Test Setup photos Set-up for Radiated Spurious Emission, Below 1GHz Set-up for Radiated Spurious Emission, Above 1GHz Page 2 of 2 Report No.: LGT23L059 Set-up for Conducted Emission