CHQ7257TA4Transmitter

No. 29, Fong Li Road, Tan-Zi Dist, Taichung City 42754, Taiwan Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA DATE : 2024/7/1 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: CHQ7257TA4 Rhine Electronics Co Ltd(“the applicant”) certifies that, as of the date of the filing of the application, TianHeng Consulting, LLC is our designated U.S. agent for service of process for the above referenced FCC ID. Rhine Electronics 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 the equipment. TianHeng Consulting, LLC accepts, as of the date of the filing of the application, the ob li gation of the designated U.S. agent for service of process for the above referenced FCC ID. Sincerely, Designated U.S. Agent Information : Name: TianHeng Consulting, LLC FRN: 0033401258 Contact Person: Hualing Dong Ad d ress: 392 Andover Street, Wilmington, MA 01887, United States Tel.: +1 617-997 -4010 Email: [email protected] U.S. Agent Signature: Applicant: Company Name:RHINE ELECTRONIC CO. LTD. Grantee Code:CHQ FRN: 0006034789 Contact Name:Joseph Liao Address: No. 29, Fong Li Road, Tan-Zi Dist, Taichung City 42754, Taiwan Tel.: +886 4 2531-2825 Em a il:[email protected] Applicant Signature: Hualing Dong, President

C5266091_X24_Ed.2 1/1 “AttestationStatements” TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:RhineElectronicsCoLtd FRN:0006034789 Granteecode:CHQ FCCID:CHQ7257TA4 ContactName:JosephLiao Address:No.29,FongLiRoad,Tan-ZiDist,TaichungCity42754,Taiwan TelephoneNo:04-25312825 FaxNo:04-25313351 Email:[email protected] i.RhineElectronicsCoLtd(“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Theapplicantmustsignthiscertification. ii.RhineElectronicsCoLtd(“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,theapplicant[isnot](asaspecificallynamedentity oranyofitssubsidiariesoraffiliates)identifiedontheCoveredListasan entityproducing“covered”equipment.Theapplicantmustsignthis certification. RhineElectronicsCoLtd(“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Date:2024/7/1 Applicant’sName:RhineElectronicsCo Ltd Title:EngineeringGeneralManager Signature JosephLiao 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

C5266091_X8_Ed.1 No.29,FongLiRoad,Tan-ZiDist,TaichungCity42754,Taiwan 1/1 LetterofAuthorization Company:RhineElectronicsCoLtd Address:No.29,FongLiRoad,Tan-ZiDist,TaichungCity 42754,Taiwan ProductName:Transmitter ModelNumber:UC7257TA4 FCCIdentifier:CHQ7257TA4 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:JosephLiaoDate: Title:EngineeringGeneralManager Signatureofapplicant: 2024/7/3

C5266091_X10_Ed.2 No.29,FongLiRoad,Tan-ZiDist,TaichungCity42754,Taiwan 1/1 OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date: 2024/7/1 Subject:RequestforConfidentiality FCCID:CHQ7257TA4 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☒ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo User’sManual ☐ NOTE 1 ☒ InternalPhotos ☐ NOTE 1 ☒ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof180daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. ☒ C5266091_X10_Ed.2 No.29,FongLiRoad,Tan-ZiDist,TaichungCity42754,Taiwan 1/1 Sincerely, Signature: Name:JosephLiao Title:EngineeringGeneralManager

No. 29, Fong Li Road, Tan-Zi Dist, Taichung City 42754, Taiwan 1/1 Power Of Attorney Date: 2024/7/1 Rhine Electronics Co Ltd No. 29, Fong Li Road, Tan-Zi Dist, Taichung City 42754, Taiwan Name: Joseph Liao Title: Engineering General Manager On our behalf, I appoint below company and person: Name Stanley Lin Position Manager Company Name SERTC Testing Center Co., Ltd. Address No. 230, Section 2, Fengshi Road, Fengyuan District, Taichung Taiwan Tel +886-4-25253313 E-Mail [email protected] to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission's regulations will have affixed to it a label identical to that submitted for approval with this application. Name: Joseph Liao Date: 2024/7/1 Title: Engineering General Manager Signature of applicant

UC7257TA4

MRT Technology (Taiwan) Co., Ltd Report No.: 2406TW5401-U2 Phone: +886-3-3288388 Repor t Vers ion: 1.0 Fax: +886-3-3288918 Issue Date: 2024-07-01 Web: www.mrt-cert.com Page Number: 1 of 5 RF Exposure Evaluation FCC ID : CHQ7257TA4 APPLICANT : RHINE ELECTRONIC CO., LTD. Application Type : Certification Product : Transmitter Model No. : UC7257TA4 Brand Name : RHINE FCC Rule Part(s): : Part 2.1093 (Portable) Received Date : June 12, 2024 Tested By : ( Kaunaz Lee ) Reviewed By : ( Paddy Chen ) Approved By : ( Chenz Ker) The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Taiwan) Co., Ltd. Report No.: 2406TW5401-U2 Page Number: 2 of 5 Revision History Report No. Version Description Issue Date Note 2406TW5401-U2 1.0 Original Report 2024-07-01 Report No.: 2406TW5401-U2 Page Number: 3 of 5 1. PRODUCT INFORMATION 1.1. Equipment Description Product Name Transmitter Model No. UC7257TA4 Brand Name RHINE Frequency Range 433.92MHz Report No.: 2406TW5401-U2 Page Number: 4 of 5 2. RF Exposure Evaluation 2.1. FCC Limits According to FCC KDB 447498 D04V01 - SAR-Based Exemption This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula . and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula. The example values shown as below are for illustration only. Note: when 10-g extremity SAR applies, SAR test exemption may be considered by applying a factor of 2.5 to the SAR-based exemption thresholds. Report No.: 2406TW5401-U2 Page Number: 5 of 5 2.2. Test Result of RF Exposure Evaluation Mode Frequency Band (MHz) Maximum EIRP (dBuV/m) EIRP (mW) FCC SAR Test Exclusion Threshold (mW) Sub-1G 433.92 89.21 0.2501 22 Note: So, this device can complies the SAR test exclusion. The End

MRT Technology (Taiwan) Co., Ltd Report No.: 2406TW5401-U1 Phone: +886-3-3288388 R ep or t Ver s i on: 1.0 Fax: +886-3-3288918 Issue Date: 2024-07-01 Web: www.mrt-cert.com Page Number: 1 of 31 FCC ID : CHQ7257TA4 APPLICANT : RHINE ELECTRONIC CO., LTD. Application Type : Certification Product : Transmitter Model No. : UC7257TA4 Brand Name : RHINE FCC Classification : FCC Part 15 Security/Remote Control Transmitter (DSC) FCC Rule Part(s) : Part 15.231(b) Test Procedure(s) : ANSI C63.10-2013 Received Date : June 12, 2024 Test Date : June 17, 2024~ June 27, 2024 MEASUREMENT REPORT Tested By : ( Kaunaz Lee ) Reviewed By : ( Paddy Chen ) Approved By : ( Chenz Ker) The test results only relate to the tested sample. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in ANSI C63.10-2013. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Taiwan) Co., Ltd. Report No.: 2406TW5401-U1 Page Number: 2 of 31 Revision History Report No. Version Description Issue Date Note 2406TW5401-U1 1.0 Original Report 2024-07-01 Report No.: 2406TW5401-U1 Page Number: 3 of 31 CONTENTS Description Page 1. INTRODUCTION ..................................................................................................................... 6 1.1. Scope ........................................................................................................................... 6 1.2. MRT Test Location ....................................................................................................... 6 2. PRODUCT INFORMATION ..................................................................................................... 7 2.1. Equipment Description .................................................................................................. 7 2.2. Test Standards ............................................................................................................. 7 2.3. Test Methodology ......................................................................................................... 7 2.4. EUT Setup and Test Mode ........................................................................................... 8 3. ANTENNA REQUIREMENTS .................................................................................................. 9 4. TEST EQUIPMENT CALIBRATION DATE ............................................................................ 10 5. MEASUREMENT UNCERTAINTY .......................................................................................... 11 6. TEST RESULT ...................................................................................................................... 12 6.1. Summary .................................................................................................................... 12 6.2. Radiated Emissions .................................................................................................... 13 6.2.1. Standard Applicable ................................................................................................ 13 6.2.2. Test Procedure........................................................................................................ 13 6.2.3. Test Setup ............................................................................................................... 14 6.2.4. Test Results ............................................................................................................ 15 6.3. 20dB Bandwidth / 99% Bandwidth .............................................................................. 21 6.3.1. Standard Applicable ................................................................................................ 21 6.3.2. Test Procedure........................................................................................................ 21 6.3.3. Test Setup ............................................................................................................... 21 6.3.4. Test Result .............................................................................................................. 22 6.4. Transmission Time ...................................................................................................... 23 6.4.1. Standard Applicable ................................................................................................ 23 6.4.2. Test Procedure........................................................................................................ 23 6.4.3. Test Setup ............................................................................................................... 23 6.4.4. Test Result .............................................................................................................. 24 6.5. Duty Cycle .................................................................................................................. 25 6.5.1. Standard Applicable ................................................................................................ 25 6.5.2. Test Procedure........................................................................................................ 25 6.5.3. Test Setup ............................................................................................................... 25 6.5.4. Test Result .............................................................................................................. 26 6.6. AC Conducted Emissions Measurement ..................................................................... 28 Report No.: 2406TW5401-U1 Page Number: 4 of 31 6.6.1. Test Limit ................................................................................................................ 28 6.6.2. Test Setup ..........................................................…

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