2BF3O-TS610Tire Pressure Monitoring System

FCC Caution: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. To maintain compliance with FCCs RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BF3O-TS610TS610,TS610-4,TS610-6,TS610-6-Silver, TS600,TS620,TS630,TS640,TS650,TS660 We, Applicant CompanyName:ShenzhenCheshitongIndustrialCo.,Ltd. Address:3rdFloor,Building2,No.49,YuexingRoad, FuchengStreet,LonghuaDistrict, Shenzhen,GuangdongProvince Phone:+8618665861085 certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-3 SignatureDate PrintedNameofSignee:LingLiu Company:ShenzhenCheshitongIndustrial Co.,Ltd. Phone:8618665861085 Email:[email protected] Address:3rdFloor,Building2,No.49, YuexingRoad,FuchengStreet,Longhua District,Shenzhen,GuangdongProvince Fax:N/A

ShenzhenCheshitongIndustrialCo.,Ltd. Add:3rdFloor,Building2,No.49,YuexingRoad,FuchengStreet,LonghuaDistrict, Shenzhen,GuangdongProvince Date:2025-12-3 FCCID:2BF3O-TS610 ModelNumber:TS610,TS610-4,TS610-6,TS610-6-Silver,TS600,TS620,TS630,TS640,TS65 0,TS660 To:FederalCommunicationCommission AuthorizationandEvaluationDivision7435OaklandMillsRoad Columbia,MD21048 ToWhomItMayConcern, We,ShenzhenCheshitongIndustrialCo.,Ltd.herebydeclarethatourproduct(Bluetoothhelmet headset）ModelNumber：TS610,TS610-4,TS610-6,TS610-6-Silver,TS600,TS620,TS630,TS640, TS650,TS660,theyareelectricalidentical,theSchematic,PCBlayout,structureandsoftwareare same,onlythedifferenceisthemodelnameformarketpurpose. Sincerely, (Signed) Name/Title:LingLiu/GeneralManager Company:ShenzhenCheshitongIndustrialCo.,Ltd. Address:3rdFloor,Building2,No.49,YuexingRoad,FuchengStreet,LonghuaDistrict, Shenzhen,GuangdongProvince Phone:+8618665861085 FaxNumber:N/A E-Mail:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BF3O-TS610TS610,TS610-4,TS610-6,TS610-6-Silver,TS600, TS620,TS630,TS640,TS650,TS660 Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription  theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-3 SignatureDate PrintedNameofSignee/Title:LingLiu/GeneralManager Company:ShenzhenCheshitongIndustrialCo.,Ltd. Address:3rdFloor,Building2,No.49,YuexingRoad,FuchengStreet,LonghuaDistrict, Shenzhen,GuangdongProvince Phone:+8618665861085 Fax:N/A Email:[email protected]

ReportNo.:CISRR251024182 Page:32of38 7.EXTERNALANDINTERNALPHOTOS 7.1Externalphotos ReportNo.:CISRR251024182 Page:33of38 ReportNo.:CISRR251024182 Page:34of38 ReportNo.:CISRR251024182 Page:35of38

Label Size:20mm*10mm FCCID:2BF3O-TS610 LabelLocation

ReportNo.:CISRR251024182 Page:32of34 7.2Internalphotos ANT ReportNo.:CISRR251024182 Page:33of34 ReportNo.:CISRR251024182 Page:34of34 ------Endofthereport------

RFExposureevaluation FCCID2BF3O-TS610 ProductNameTirePressureMonitoringSystem Model/Type reference TS610 ListedModel(s)TS610-4,TS610-6,TS610-6-Silver,TS600,TS620,TS630,TS640,TS650, TS660 ExposurecategoryGeneralpopulation/uncontrolledenvironment EUTTypeProductionUnit DeviceTypeMobileDevice 1.Reference ANSIC95.1–1999:IEEEStandardforSafetyLevelswithRespecttoHumanExposureto RadioFrequencyElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01General1RFExposureGuidancev06:MobileandPortable DevicesRFExposureProceduresandEquipmentAuthorizationPolicies. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1091:Radiofrequencyradiationexposureevaluation:mobiledevices 2.Limit LimitsforMaximumPermissibleExposure(MPE)/ControlledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100)* (900/f2)* 1.0 f/300 5 6 6 6 6 6 LimitsforMaximumPermissibleExposure(MPE)/UncontrolledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100)* (180/f2)* 0.2 f/1500 1.0 30 30 30 30 30 F=frequencyinMHz *=Plane-waveequivalentpowerdensity 3.MPECalculationMethod PredicationofMPElimitatagivendistance Equationfrompage18ofOETBulletin65,Edition97-01 S=PG/4πR² Where:S=powerdensity P=powerinputtoantenna G=powergainoftheantennainthedirectionofinterestrelativetoanisotropicradiator R=distancetothecenterofradiationoftheantenna 4.AntennaInformation AntennaNo.Typeofantenna: Gainoftheantenna (Max.) Frequencyrange: 433MSpringAntenna0.67dBi433MHz 5.ConductedPeakOutputPower TXfrequencyrange:433.92MHz Devicecategory:Portabledevice(Distance:5mm)Max.FieldStrength:69.42dBuV/m@3m EIRP=E-104.8+20logD=69.42-104.8+20log3=-25.837dBm MaximumConductedOutputPower:-25.837dBm Tune-up:-25±1dBm 6.EvaluationResult AsdeclaredbytheApplicant,theEUTisawirelessdeviceusedinafixapplication,atleast20 cmfromanybodypartoftheuserornearbypersons;fromthemaximumEUTRFoutput power,theminimumseparationdistance,r=20cm,aswellasthegainoftheused433M antennais0.67dBi,theRFpowerdensitycanbeobtained. Mode Outputpower Antenna Gain(dBi) Antenna Gain(linear) MPE (mW/cm 2 ) MPELimits (mW/cm 2 ) dBmmW FSK-240.0040.671.170.00000091 Remark: 1.Outputpower(Peak)includingturn-uptolerance; 2.MPEevaluatedistanceis20cmfromusermanualprovidebymanufacturer. 7.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolled RFExposureandSARExclusionThresholdperKDB447498v06. ------Endofthereport------

Antenna data sheet Antenna nameAntenna Manufacturer He Fangyuan Hardware Factory Add 1st Floor, Building 8, Huafeng Luotian Technology Park, No. 54 Guangtian Road, Luotian Community, Yanluo Street, Bao'an District, Shenzhen City TS640 PeakGian：0.67dBi Antenna typespring antenna Test setup 1.Antenna Dimension 2. Performance parameter Frequencyrange425.1MHz-445.1MHz VSWR≤7.0 Inputimpedance50Ω PeakGain(dBi)0.67 AntennatypeSpring antenna Temperature-40~80 3.VSWRTestData Frequency(MHz)ReturnLossVSWR -8.1 425.1 71.16 -10.7 435.1 92.15 -10.3 445.1 12.75 4.GainandEffi Frequency(MHz)EffiPeakGain 1.4 425.1 60.67 1.5 435.1 80.31 1.2 445.1 70.18 5.TestDirectionaldiagram 425.1MHz 435.1MHz 445.1MHz

ReportNo.:CISRR251024182 Page:1of29 TESTREPORT ReportNo.:CISRR251024182 ProjectNo. CISR251024182 FCCID 2BF3O-TS610 Applicant: ShenzhenCheshitongIndustrialCo.,Ltd. Address: 3rdFloor,Building2,No.49,YuexingRoad,FuchengStreet,Longhua District,Shenzhen ManufacturerShenzhenCheshitongIndustrialCo.,Ltd. Address 3rdFloor,Building2,No.49,YuexingRoad,FuchengStreet,Longhua District,Shenzhen ProductName:TirePressureMonitoringSystem TradeMark: Cheshitong Model/Typereference:TS610 ListedModel(s): TS610-4,TS610-6,TS610-6-Silver,TS600,TS620,TS630,TS640,TS650, TS660 Standard:47CFRPart15.231 Testdate: November3,2025 Issuedate November3,2025toDecember11,2025 Testresult:December11,2025 Reviewedby:MorganTanApprovedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. ReportNo.:CISRR251024182 Page:2of29 Contents 1.REPORTVERSION.........................................................................................................................................3 2.SUMMARYOFTESTRESULT.......................................................................................................................4 3.SUMMARY.....................................................................................................................................................5 3.1.ProductDescription....................................................................................................................................5 3.2.RadioSpecificationDescription................................................................................................................5 3.3.ModificationofEUT.....................................................................................................................................6 3.4.TestingSite...................................................................................................................................................6 4.TESTCONFIGURATION.............................................................................................................................7 4.1.Testfrequencylist.......................................................................................................................................7 4.2.Testmode.....................................................................................................................................................7 4.3.Supportunitusedintestconfigurationandsystem...............................................................................7 4.4.Testsampleinformation.............................................................................................................................7 4.5.Testingenvironmentalcondition...............................................................................................................8 4.6.Statementofthemeasurementuncertainty.............................................................................................8 4.7.EquipmentUsedduringtheTest...............................................................................................................9 5.TESTCONDITIONSANDRESULTS.....................................................................................................11 5.1.AntennaRequirement...............................................................................................................................11 5.2.ACConductedEmission...........................................................................................................................12 Line:Line...........................................................................................................................................................13 5.3.20dBBandwidth........................................................................................................................................15 5.6SilentPeriodTime......................................................................................................................................16 5.4.DutycycleFactor.......................................................................................................................................20 5.5.Radiatedfieldstrengthofthefundamentalsignal.................................................................................23 5.6.RadiatedSpuriousEmission....................................................................................................................24 ReportNo.:CISRR251024182 Page:3of29 1.REPORTVERSION VersionNo.IssuedateDescription 00December11,2025Original ReportNo.:CISRR251024182 Page:4of29 2.SUMMARYOFTESTRESULT Report clause TestItemStandardRequirementResult 5.1AntennaRequirement15.203PASS 5.2ACConductedEmission15.207PASS 5.320dBBandwidth15.231(c)PASS 5.4RadiatedSpuriousEmission15.231(e)/15.205/15.209PASS 5.5Silentperiodtime15.231(e)PASS 5.6DutycycleFactor15.231PASS Note: ‒Themeasurementuncertaintyisnotincludedinthetestresult. ReportNo.:CISRR251024182 Page:5of29 3.SUMMARY 3.1.ProductDescription Mainunitinformation: ProductName:TirePressureMonitoringSystem Trademark:Cheshitong ModelNo.:TS610 ListedModel(s): TS610-4,TS610-6,TS610-6-Silver,TS600,TS620,TS630,TS640,TS650, TS660 Modeldifference: Allmodelsareidenticaltothesampleexceptfortheirnamesand appearances,withcompletelyconsistentstructures/circuits. Powersupply:DC5V Hardwareversion:- Softwareversion:- Accessoryunit(AU)information: AU-1DC3.7VforBattery 3.2.RadioSpecificationDescription Technology:SRD Modulation:FSK Operationfrequency:433.92MHz ChannelNumber:1 Antennatype:SpringAntenna Antennagain:0.67dBi ReportNo.:CISRR251024182 Page:6of29 3.3.ModificationofEUT NomodificationsaremadetotheEUTduringalltestitems. 3.4.TestingSite LaboratoryName ShenzhenBangceTestingTechnologyCo.,Ltd. LaboratoryLocation 101,building10,YunliIntelligentPark,Shutianpucommunity,MatianStreet, GuangmingDistrict,Shenzhen，Guangdong,China FCCregistrationnumber736346 ReportNo.:CISRR25102418…

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ReportNo.:CISRR251024182 Page:26of34 6.TESTSETUPPHOTOS ConductedEmission RadiatedEmission(below1GHz) RadiatedEmission(above1GHz) ReportNo.:CISRR251024182 Page:27of34