2BXPS-YKQ-01Wireless Remote Controller

YIWU LANGXUN E-COMMERCE CO LTD (NO. 69, HUANGZHAI VILLAGE,YIWU, ZHEJIANG, 322000, CHINA) U.S. Agent Letter of Attestation 7435 Oakland Mills Road, Columbia, MD 21046, USA To: Federal Communications Commission Date: Aug. 17, 26 [HOPEK CORPORATION INC] ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical Ref: Attestation Statement –Part2.911(d)(7) filing FCC ID:2BXPS-YKQ-01 [YIWU LANGXUN E-COMMERCE CO LTD](“the applicant”) certifies that, as of the date of the filing of the application, [HOPEK CORPORATION INC](“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. U.S. address and email address. Designated U.S. Agent Company Name: HOPEK CORPORATION INC FRN: 0034562900 GC: N/A Address: 16755 Coyote Bush Dr Unit 84, San Diego, CA 92127 United States Signature: Contact Person: Yangyang Xu Tel: 561-875-9826 Email: [email protected] Applicant Company Name: YIWU LANGXUN E-COMMERCE CO LTD Address: NO. 69, HUANGZHAI VILLAGE,YIWU, ZHEJIANG, 322000, CHINA FRN: 0038780011 Signature: Contact Person: Yizai Tan Tel: +86 13750973703 Email: [email protected]

(YIWU LANGXUN E-COMMERCE CO LTD) (August 14, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BXPS-YKQ-01)) [YIWU LANGXUN E-COMMERCE 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Yizai Tan (YIWU LANGXUN E-COMMERCE CO LTD) (August 14, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BXPS-YKQ-01) [YIWU LANGXUN E-COMMERCE 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. Sincerely, (Applicant signature) (Applicant printed name) Yizai Tan

YIWU LANGXUN E-COMMERCE CO LTD (August 14, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen DACE Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Yizai Tan Title: Manager

YIWU LANGXUN E-COMMERCE CO LTD (August 14, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Wireless Remote Controller / YKQ-01 / FCC ID: 2BXPS-YKQ-01) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the 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 ☐ ☒ 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 required to be submitted with this application be permanently withheld from public review. The short-term confidentiality period is 180 days. 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. Please contact me if there is any information you may need. Sincerely, Signature: Name: Yizai Tan Title: Manager

Label Location: Wireless Remote Controller Model: YKQ-01 FCC ID: 2BXPS-YKQ-01

YIWU LANGXUN E-COMMERCE CO LTD FCC ID: 2BXPS-YKQ-01 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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 When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion ASK 0.315 -14.88 0.03 -14±1 -13.00 0.05 <5 0.0056 3.00 YES Note： 1. Antenna Gain 0dBi. 2. dBm=dbuv/m-95.2=75.62-95.2+4.7=-14.88dBm(EIRP), so the conduct peak power=-14.88-0=-14.88dBm Conclusion: For the max result: 0.0056≤ FCC Limit 3.0 for 1g SAR.

1. Antenna specification Schematic diagram of antenna 2.Specifications Center of frequency 315M Hz Antenna bandwidth 300-350MHz Antenna gain 0dBi VSWR ≤1.5 Polarization direction Linear polarization Radiation direction Omnidirectional Input impedance 50 Ω Manufacturer Shenzhen Chuangjie Electronic Technology Co., Ltd 108mm 44mm 4mm Address: Room 441, Dormitory Building C, Shangxing Western Industrial Park, No. 1001-1 Xihuan Road, Dawangshan Community, Shajing Subdistrict, Bao'an District, Shenzhen 3.Antenna characteristics VSWR Smith Chart

V1.0Report No.: DACE260727002RF001 102, Building H1, & 1/F., Building H, Hongfa Science & Technology Park, Tangtou Community, Shiyan Subdistrict, Bao'an District, Shenzhen, Guangdong, China Web: http://www.dace-lab.comTel: +86-755-23010613E-mail: [email protected] 1 of 29 RF TEST REPORT For YIWU LANGXUN E-COMMERCE CO LTD Product Name: Wireless Remote Controller Test Model(s): YKQ-01 Report Reference No.:DACE260727002RF001 FCC ID:2BXPS-YKQ-01 Applicant’s Name: YIWU LANGXUN E-COMMERCE CO LTD Address: NO. 69, HUANGZHAI VILLAGE,YIWU, ZHEJIANG, 322000, CHINA Testing Laboratory: Shenzhen DACE Testing Technology Co., Ltd. Address: 102, Building H1, & 1/F., Building H, Hongfa Science & Technology Park, Tangtou Community, Shiyan Subdistrict, Bao'an District, Shenzhen, Guangdong, China Test Specification Standard:47 CFR Part 15.231 Date of Receipt: July 27, 2026 Date of Test: July 27, 2026 to August 12, 2026 Date of Issue: August 12, 2026 Result:Pass Note: This report shall not be reproduced except in full, without the written approval of Shenzhen DACE Testing Technology Co., Ltd . This document may be altered or revised by Shenzhen DACE Testing Technology Co., Ltd . personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample V1.0Report No.: DACE260727002RF001 102, Building H1, & 1/F., Building H, Hongfa Science & Technology Park, Tangtou Community, Shiyan Subdistrict, Bao'an District, Shenzhen, Guangdong, China Web: http://www.dace-lab.comTel: +86-755-23010613E-mail: [email protected] 2 of 29 Apply for company information Applicant’s Name: YIWU LANGXUN E-COMMERCE CO LTD Address: NO. 69, HUANGZHAI VILLAGE,YIWU, ZHEJIANG, 322000, CHINA Product Name: Wireless Remote Controller Test Model(s): YKQ-01 Test Specification Standard(s): 47 CFR Part 15.231 NOTE1: The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. Compiled by:Supervised by:Approved by: Lucy Mo / Test EngineerArron Liu / Project EngineerTom Chen / Manager August 12, 2026August 12, 2026August 12, 2026 V1.0Report No.: DACE260727002RF001 102, Building H1, & 1/F., Building H, Hongfa Science & Technology Park, Tangtou Community, Shiyan Subdistrict, Bao'an District, Shenzhen, Guangdong, China Web: http://www.dace-lab.comTel: +86-755-23010613E-mail: [email protected] 3 of 29 Revision History Of Report VersionDescriptionREPORT No.Issue Date V1.0OriginalDACE260727002RF001August 12, 2026 V1.0Report No.: DACE260727002RF001 102, Building H1, & 1/F., Building H, Hongfa Science & Technology Park, Tangtou Community, Shiyan Subdistrict, Bao'an District, Shenzhen, Guangdong, China Web: http://www.dace-lab.comTel: +86-755-23010613E-mail: [email protected] 4 of 29 CONTENTS 1澳TEST SUMMARY...........................................................................................................................................5澳 1.1澳TEST STANDARDS..................................................................................................................................5澳 1.2澳SUMMARY OF TEST RESULT....................................................................................................................5澳 2澳GENERAL INFORMATION............................................................................................................................6澳 2.1澳CLIENT INFORMATION.............................................................................................................................6澳 2.2澳DESCRIPTION OF DEVICE (EUT)..............................................................................................................6澳 2.3澳DESCRIPTION OF TEST MODES................................................................................................................6澳 2.4澳DESCRIPTION OF SUPPORT UNITS...........................................................................................................6澳 2.5澳EQUIPMENTS USED DURING THE TEST....................................................................................................7澳 2.6澳STATEMENT OF THE MEASUREMENT UNCERTAINTY.................................................................................8澳 3澳EVALUATION RESULTS (EVALUATION).....................................................................................................9澳 3.1澳ANTENNA REQUIREMENT.........................................................................................................................9澳 3.1.1澳Conclusion:...............................................................................................................................9澳 4澳RADIO SPECTRUM MATTER TEST RESULTS (RF).................................................................................10澳 4.1澳20DB BANDWIDTH................................................................................................................................10澳 4.1.1澳E.U.T. Operation:.....................................................................................................................11澳 4.1.2澳Test Setup Diagram:................................................................................................................11澳 4.1.3澳Test Data:...............................................................................................................................12澳 4.2澳DWELL TIME.........................................................................................................................................13澳 4.2.1澳E.U.T. Operation:....................................................................................................................13澳 4.2.2澳Test Setup Diagram:.......................................................................…

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