2BGFX-CTLRR620A510Millimeter Wave Radar

Rev 1/26/2023 Shenzhen Cheng-Tech Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 24, 2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BGFX-CTMRR510 Shenzhen Cheng-Tech 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. Shenzhen Cheng-Tech Co., Ltd.certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, (Applicant signature) (Qing Li) X Rev 1/26/2023 Shenzhen Cheng-Tech Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 24, 2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BGFX-CTMRR510 Shenzhen Cheng-Tech Co., Ltd.certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Qing Li)

Shenzhen Cheng-Tech Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 24, 2026 Subject; Request for Confidentiality FCC ID: 2BGFX-CTLRR620A510 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: Qing Li Title: Manager

Shenzhen Cheng-Tech Co., Ltd. Date 2026/6/3 Product Model Number: CTLRR-620 A510 FCC ID: 2BGFX-CTLRR620A510 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 QAI Laboratories Ltd. 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 QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. By: Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: 18503051642 On behalf of: Qing Li

FCCID:2BGFX-CTLRR620A510 ExternalPhotosoftheEUT CTLRR-620A510 Fig.1 Fig.2 FCCID:2BGFX-CTLRR620A510 Fig.3 Fig.4 FCCID:2BGFX-CTLRR620A510 Fig.5 Fig.6 CTLRR-620 FCCID:2BGFX-CTLRR620A510 Fig.7 Fig.8 FCCID:2BGFX-CTLRR620A510 Fig.9 Fig.10 FCCID:2BGFX-CTLRR620A510 Fig.11 Fig.12

FCCID:2BGFX-CTLRR620A510 labelandlocation Fig.1 FCCID:2BGFX-CTLRR620A510

FCCID:2BGFX-CTLRR620A510 InternalPhotosoftheEUT CTLRR-620A510 Fig.1 Fig.2 TX2Antenna TX3Antenna TX1Antenna TX4Antenna TX5Antenna TX6Antenna TX7Antenna TX8Antenna RX6Antenna RX5Antenna RX4Antenna RX3Antenna RX2Antenna RX1Antenna RX8Antenna RX7Antenna FCCID:2BGFX-CTLRR620A510 Fig.3 CTLRR-620 Fig.4 Antenna FCCID:2BGFX-CTLRR620A510 Fig.5 Fig.6

ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. 101#,BuildingK&BuildingT,TheSecondIndustrialZone,JiazitangCommunity, FenghuangStreet,GuangmingDistrict,Shenzhen,China RFExposureevaluation ReportReferenceNo........................: FCCID.................................................: GRCTR260302010-02 2BGFX-CTLRR620A510 Compiledby (position+printedname+signature) .. : TestingEngineerJimmyWang Supervisedby (position+printedname+signature)..: ProjectEngineerKelleyZhang Approvedby (position+printedname+signature)..: ManagerZhihuiDeng Dateofissue ......................................... :Jun.23,2026 TestingLaboratoryName ................ :ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. Address ................................................. : 101#,BuildingK&BuildingT,TheSecondIndustrialZone, JiazitangCommunity,FenghuangStreet,GuangmingDistrict, Shenzhen,China Applicant’sname...............................:ShenzhenCheng-TechCo.,Ltd. Address.................................................: 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet,Pingshan District,Shenzhen,Guangdong,P.R.China Testspecification .............................. : Standard ................................................ : 47CFR§2.1091 KDB447498D01v06 ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.isacknowledgedascopyrightownerand sourceofthematerial.ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.takesno responsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader'sinterpretationofthe reproducedmaterialduetoitsplacementandcontext. Testitemdescription ........................ :MillimeterWaveRadar TradeMark ............................................ : Cheng-Tech Manufacturer.........................................: ShenzhenCheng-TechCo.,Ltd. Model/Typereference.........................: CTLRR-620A510 ListedModels......................................: / HardwareVersion...............................:/ SoftwareVersion .................................. :/ Frequency .............................................. 77GHz-79GHz Ratings...................................................:DC13V Result.....................................................:PASS ReportNo.:Page2of8 TESTREPORT EquipmentunderTest:MillimeterWaveRadar Model/Type:CTLRR-620A510 ListedModels:/ Applicant : ShenzhenCheng-TechCo.,Ltd. Address: 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet,Pingshan District,Shenzhen,Guangdong,P.R.China Manufacturer : ShenzhenCheng-TechCo.,Ltd. Address: 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet,Pingshan District,Shenzhen,Guangdong,P.R.China TestResult : PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. ReportNo.:Page3of8 Contents 1.SUMMARY...............................................................................................................................................4 1.1.GeneralRemarks.........................................................................................................................................4 1.2.ProductDescription....................................................................................................................................4 1.3.EquipmentUnderTest................................................................................................................................4 1.4.ShortdescriptionoftheEquipmentunderTest(EUT)............................................................................4 1.5.EUTconfiguration........................................................................................................................................4 1.6.Modifications................................................................................................................................................4 2.TESTENVIRONMENT.......................................................................................................................5 2.1.Addressofthetestlaboratory...................................................................................................................5 2.2.TestFacility..................................................................................................................................................5 2.3.Environmentalconditions...........................................................................................................................5 2.4.Statementofthemeasurementuncertainty.............................................................................................5 3.METHODOFMEASUREMENT.....................................................................................................7 3.1.ApplicableStandard....................................................................................................................................7 3.2.Limit...............................................................................................................................................................7 3.3.MPECalculationMethod.............................................................................................................................7 4.EVALUATIONRESULT....................................................................................................................8 5.CONCLUSION........................................................................................................................................8 ReportNo.:Page4of8 1.SUMMARY 1.1.GeneralRemarks Dateofreceiptoftestsample:Feb.6,2026 Testingcommencedon:Mar.17,2026 Testingconcludedon: Jun.22,2026 1.2.ProductDescription ProductName:MillimeterWaveRadar Model/Type reference: CTLRR-620A510 L…

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CTLRR-620A510 AntennaReport ChangeResume DocumentNumber NODateVersionChangeInformationAuthorReviewApproval 12024-09-9A0InitialissueKUNPENG WANG ZHIYANG CHEN LEI QIAN 2 3 4 5 6 7 AuthorKUNPENGWANG2024-08-9 Review Approval Catalogue Catalogue...................................................................................................................................................2 1)Antennainformation..............................................................................................................................3 2)Antennadiagram...................................................................................................................................4 3)AntennaPattern.....................................................................................................................................5 3.1 ） RXAntennapattern..................................................................................................................5 3.2 ） TXAntennapattern..................................................................................................................8 1)Antennainformation AntennaManufacturerModelManufacturer'sAddressStateGain(dBi) TX1 ShenzhenChen g-TechCo.,Lt d. CTLRR-620 A510 3F,4F,5F,BuildingC, Pingshan,ChengtouzhiPark, No.37,CuijingRoad,Zhukeng Community,LongtianStreet, PingshanDistrict, Shenzhen,Guangdong,P.R. China Integrated antenna 15.05 TX2 15.11 TX3 14.80 TX4 15.01 TX5 15.15 TX6 15.05 TX7 15.06 TX8 15.12 RX1 14.77 RX2 15.17 RX3 15.16 RX4 15.15 RX5 15.16 RX6 15.16 RX7 14.60 RX8 14.90 2)Antennadiagram 3)Antennaradiationpattern 4)AntennaPattern 3.1）RXAntennapattern ThedirectionpatternsofthefourRXantennasareasfollows Figure1RX1 Figure2RX2 Figure3RX3 Figure4RX4 Figure5RX5 Figure6RX6 Figure7RX7 Figure8RX8 3.2）TXAntennapattern ThedirectionpatternsofthefourTXantennasareasfollows Figure9TX1 Figure10TX2 Figure11TX3 Figure12TX4 Figure13TX5 Figure14TX6 Figure15TX7 Figure16TX8

ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. 101#,BuildingK&BuildingT,TheSecondIndustrialZone,JiazitangCommunity, FenghuangStreet,GuangmingDistrict,Shenzhen,China FCCPART95SUBPARTMTESTREPORT ReportReferenceNo........................: FCCID................................................: GRCTR260302010-01 2BGFX-CTLRR620A510 Compiledby (position+printedname+signature) .. : TestingEngineerJimmyWang Supervisedby (position+printedname+signature)..: ProjectEngineerKelleyZhang Approvedby (position+printedname+signature)..: ManagerZhihuiDeng Dateofissue ......................................... :Jun.23,2026 TestingLaboratoryName ................ :ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. Address ................................................. : 101#,BuildingK&BuildingT,TheSecondIndustrialZone, JiazitangCommunity,FenghuangStreet,GuangmingDistrict, Shenzhen,China Applicant’sname...............................:ShenzhenCheng-TechCo.,Ltd. Address.................................................: 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet,Pingshan District,Shenzhen,Guangdong,P.R.China Testspecification .............................. : Standard ................................................ :FCCPart95SubpartM ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.isacknowledgedascopyrightownerand sourceofthematerial.ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.takesno responsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader'sinterpretationofthe reproducedmaterialduetoitsplacementandcontext. Testitemdescription........................:MillimeterWaveRadar TradeMark ............................................ : Cheng-Tech Manufacturer ......................................... : ShenzhenCheng-TechCo.,Ltd. Model/Typereference.........................: CTLRR-620A510 ListedModels.....................................: / FirmwareVersion.................................: / HardwareVersion................................: / Modulation ........................................... :FMCW Frequency .............................................. 77GHz-79GHz Ratings...................................................:DC13V Result.....................................................:PASS ReportNo.:GRCTR260302010-01 Page 2 of 47 TESTREPORT EquipmentunderTest:MillimeterWaveRadar Model/Type:CTLRR-620A510 ListedModels:/ Applicant:ShenzhenCheng-TechCo.,Ltd. Address: 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet, PingshanDistrict,Shenzhen,Guangdong,P.R.China Manufacturer:ShenzhenCheng-TechCo.,Ltd. Address : 3F,4F,5F,BuildingC,Pingshan,ChengtouzhiPark,No.37, CuijingRoad,ZhukengCommunity,LongtianStreet, PingshanDistrict,Shenzhen,Guangdong,P.R.China TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. ReportNo.:GRCTR260302010-01 Page 3 of 47 Contents 1TESTSTANDARDS........................................................................................................................4 2SUMMARY..............................................................................................................................................5 2.1GeneralRemarks..........................................................................................................................................5 2.2ProductDescription.....................................................................................................................................5 2.3EquipmentUnderTest.................................................................................................................................5 2.4ShortdescriptionoftheEquipmentunderTest(EUT).............................................................................5 2.5EUToperationmode.....................................................................................................................................5 2.6RelatedSubmittal(s)/Grant(s)...................................................................................................................5 2.7Modifications.................................................................................................................................................5 3TESTENVIRONMENT..................................................................................................................6 3.1Addressofthetestlaboratory....................................................................................................................6 3.2TestFacility...................................................................................................................................................6 3.3Environmentalconditions............................................................................................................................6 3.4TestDescription............................................................................................................................................6 3.5Statementofthemeasurementuncertainty..............................................................................................7 3.6EquipmentsUsedduringtheTest..............................................................................................................7 4TESTCONDITIONSANDRESULTS...............................................................................9 4.1EquivalentIsotropicallyRadiatedPower(EIRP).......................................................................................9 4.2UnwantedEmissions..................................................................................................................................12 4.3FrequencyStability...............................................…

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FCCID:2BGFX-CTLRR620A510 TestSetupPhotosoftheEUT TestSetupPhoto(s)ofRadiatedEmissionsMeasurement Fig.1(200-243GHZ) Fig.2(130-200GHZ) FCCID:2BGFX-CTLRR620A510 Fig.3(90-130GHZ) Fig.4(60-90GHZ) FCCID:2BGFX-CTLRR620A510 Fig.5(42-60GHZ) Fig.6(18-42GHZ) FCCID:2BGFX-CTLRR620A510 Fig.7(30M-1GHZ) Fig.8(1-18GHZ)