2ATHV-DRCRFRF Module

AttestationStatementLetterI FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:2026.4.15 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCApplicationforFCCID:2ATHV-DRCRF SHENZHENDUMBOMODELCO.,LTD.certifiesthattheequipmentforwhichauthorization issoughtisnot“covered”equipmentprohibitedforreceivinganequipmentauthorization pursuanttosection2.903oftheFCCrules. Sincerely, Applicant’sSignature: Applicant’sName:LeiyuFang

AttestationStatementLetterII FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026.4.15 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCApplicationforFCCID:2ATHV-DRCRF SHENZHENDUMBOMODELCO.,LTD.certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredListasanentityproducing “covered”equipment. Sincerely, Applicant’sSignature: Applicant’sName:LeiyuFang

FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID:2ATHV-DRCRF PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequest confidentialtreatmentofinformationaccompanyingthisapplicationasoutlinedbelow: TypeofConfidentialityRequestedExhibitType ☐ShortTerm ☒PermanentBlockDiagrams ☒ShortTermExternalPhotos ☒ShortTerm☐Permanent*InternalPhotos ☐ShortTerm ☒PermanentOperationDescription ☐ShortTerm ☒PermanentSchematics ☒ShortTermTestSetupPhotos ☒ShortTerm☐Permanent*Usermanual *Requiresfurtherjustificationbeforepermanentconfidentialitywillbeallowed. Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsmaybeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. PermanentConfidentiality: Theapplicantrequeststheexhibitslistedaboveaspermanentlyconfidentialbewithheld frompublicreviewduetomaterialsthatcontaintradesecretsandproprietaryinformation notcustomarilyreleasedtothepublic. Short-TermConfidentiality: PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealsorequest temporaryconfidentialtreatmentofinformationaccompanyingthisapplicationasoutlined belowforaninitialperiodof180days. Sincerely, Client’ssignature: Client’sname&title:LeiyuFang&GeneralManager Contactinformation/address:C301,KedasiIndustrialPark,No.42,Xinzhang Rd.,GuanhuStreet,LonghuaDistrict,Shenzhen,Guangdong,China

FCCAgentAuthorizationLetter FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:_2026.4.15_ SUBJECT:FCCApplicationforFCCID:2ATHV-DRCRF ToWhomItMayConcern: We,theundersigned,herebyauthorizeHenryWanginShenzhenNCTTesting TechnologyCo.,Ltd.onourbehalf,toapplytotheFederalCommunicationsCommissionfor ourequipment.AnyandallactscarriedoutbyShenzhenNCTTestingTechnologyCo.,Ltd. onourbehalfshallhavethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,the applicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301ofthe Anti-DrugActof1988,21USC853a,andnopartytotheapplicationissubjecttoadenialof federalbenefitspursuanttothatsection. Sincerely, Client’ssignature: Client’sname&title:LeiyuFang&GeneralManager Contactinformation/address:C301,KedasiIndustrialPark,No.42,XinzhangRd.,Guanhu Street,LonghuaDistrict,Shenzhen,Guangdong,China

Label:Size:40mm*23mm Label&Location: Label&Location:

FCCID:2ATHV-DRCRF RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1091(C)，Unlessspecifically requiredbythepublishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremity SARevaluationforgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnot requiredwhenthecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. Limits AccordingtoKDB447498D01GeneralRFExposureGuidancev06 Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultofRFExposureEvaluation Remark ： RF2.4gAntennagainis3.71dB TheMaxCalc.Thresholds:0.001659≤1 SoaSARtestisnotrequired Modulation Freque ncy MHz Output power to antenn a (dBm) Target power W/toleranc e (dBm） Max Output power to antenn a (dBm) MaxOutput powerto antenna (mW) Power Densityat R=20cm (mW/cm2 ) Limit (mW/c m2) Resul t RF2.4GGFSK 24024.58 4.5±1 5.53.5481340.0016591.0PASS 2441.63.934±153.1622780.0014781.0PASS 2481.24.52 4.5±1 5.53.5481340.0016591.0PASS

Page1of36 Hotline:400-8868-419http://www.ncttesting.cn FCCTESTREPORT FCCID:2ATHV-DRCRF Product:RFModule ModelName:DRCRF Brand:N/A ReportNo.:NCT260031052XE1-1 Preparedfor SHENZHENDUMBOMODELCO.,LTD. C301,KedasiIndustrialPark,No.42XinzhangRd.,GuanhuStreet,LonghuaDistrict, Shenzhen,Guangdong,China Preparedby ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict, Shenzhen,People’sRepublicofChina TEL:400-8868-419 ReportNo.:NCT260031052XE1-1 Page2of36 Hotline:400-8868-419http://www.ncttesting.cn 1TESTRESULTCERTIFICATION Applicant’sname:SHENZHENDUMBOMODELCO.,LTD. Address: C301,KedasiIndustrialPark,No.42XinzhangRd.,GuanhuStreet, LonghuaDistrict,Shenzhen,Guangdong,China Manufacture'sname :SHENZHENDUMBOMODELCO.,LTD. Address : C301,KedasiIndustrialPark,No.42XinzhangRd.,GuanhuStreet, LonghuaDistrict,Shenzhen,Guangdong,China Productname : RFModule Modelname : DRCRF Additionalmodel :N/A Standards :FCCCFR47Part15Section15.247 Testprocedure :ANSIC63.10-2020+Cor1-2023 TestDate:Mar.30,2026toApr.17,2026 DateofIssue:Apr.17,2026 TestResult :Pass ThisdevicedescribedabovehasbeentestedbyNCT,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonly tothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofNCT,this documentmaybealteredorrevisedbyNCT,personalonly,andshallbenotedintherevisionof thedocument. TestEngineer: KevenWu/Engineer TechnicalManager: HenryWang/Manager ReportNo.:NCT260031052XE1-1 Page3of36 Hotline:400-8868-419http://www.ncttesting.cn Contents Page 1TESTRESULTCERTIFICATION...................................................................................................................2 2TESTSUMMARY............................................................................................................................................5 3TESTFACILITY...............................................................................................................................................6 4GENERALINFORMATION.............................................................................................................................7 4.1GENERALDESCRIPTIONOFE.U.T..........................................................................................................7 4.2CHANNELLIST.......................................................................................................................................8 4.3TESTSETUPCONFIGURATION................................................................................................................9 4.4TESTCONFIGURATION............................................................................................................................9 5EQUIPMENTDURINGTEST........................................................................................................................10 5.1EQUIPMENTSLIST................................................................................................................................10 5.2MEASUREMENTUNCERTAINTY..............................................................................................................12 5.3DESCRIPTIONOFSUPPORTUNITS........................................................................................................12 6CONDUCTEDEMISSION.............................................................................................................................13 6.1E.U.T.OPERATION..............................................................................................................................13 6.2EUTSETUP.........................................................................................................................................13 6.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION).........................................................................13 6.4MEASUREMENTPROCEDURE:...............................................................................................................14 6.5CONDUCTEDEMISSIONLIMIT................................................................................................................14 6.6MEASUREMENTDESCRIPTION...............................................................................................................14 6.7CONDUCTEDEMISSIONTESTRESULT...................................................................................................14 7RADIATEDSPURIOUSEMISSIONS...........................................................................................................17 7.1EUTOPERATION.................................................................................................................................17 7.2TESTSETUP........................................................................................................................................18 7.3SPECTRUMANALYZERSETUP...............................................................................................................19 7.4TESTPROCEDURE...............................................................................................................................20 7.5SUMMARYOFTESTRESULTS...............................................................................................................21 8MAXIMUMPEAKOUTPUTPOWERTEST.................................................................................................29 8.1TESTSTANDARDANDLIMIT..................................................................................................................29 8.2TESTSETUP........................................................................................................................................29 8.3TESTPROCEDURE...............................................................................................................................29 8.4TESTDATA.........................................................................................................…

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1 / 30 目录 MaximumConductedOutputPower...........................................................................................................................................................2 -20dBBandwidth........................................................................................................................................................................................5 OccupiedChannelBandwidth....................................................................................................................................................................8 CarrierFrequenciesSeparation................................................................................................................................................................11 NumberofHoppingChannel....................................................................................................................................................................14 DwellTime................................................................................................................................................................................................17 BandEdge................................................................................................................................................................................................21 BandEdge(Hopping)................................................................................................................................................................................24 ConductedRFSpuriousEmission............................................................................................................................................................27 2 / 30 MaximumConductedOutputPower ConditionModeFrequency (MHz) AntennaConductedPower (dBm) DutyFactor (dB) TotalPower (dBm) Limit (dBm) Verdict NVNTGFSK 2402 Ant1 4.5804.5821Pass 2441.63.9303.9321Pass 2481.24.5204.5221Pass 3 / 30 TestGraphs PowerNVNTGFSK2402MHzAnt1 PowerNVNTGFSK2441.6MHzAnt1 4 / 30 PowerNVNTGFSK2481.2MHzAnt1 5 / 30 -20dBBandwidth ConditionModeFrequency(MHz)Antenna-20dBBandwidth(MHz)Limit-20dBBandwidth(MHz)Verdict NVNTGFSK 2402 Ant1 0.1190Pass 2441.60.1170Pass 2481.20.1180Pass 6 / 30 TestGraphs -20dBBandwidthNVNTGFSK2402MHzAnt1 -20dBBandwidthNVNTGFSK2441.6MHzAnt1 7 / 30 -20dBBandwidthNVNTGFSK2481.2MHzAnt1 8 / 30 OccupiedChannelBandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTGFSK 2402 Ant1 0.115 2441.60.115 2481.20.112 9 / 30 TestGraphs OBWNVNTGFSK2402MHzAnt1 OBWNVNTGFSK2441.6MHzAnt1 10 / 30 OBWNVNTGFSK2481.2MHzAnt1 11 / 30 CarrierFrequenciesSeparation ConditionModeAntennaHoppingFreq1(MHz)HoppingFreq2(MHz)HFS(MHz)Limit(MHz)Verdict NVNTGFSKAnt1 2401.93122403.1941.26280.079Pass 2441.542442.83581.29580.078Pass 2479.9622481.15441.19240.079Pass 12 / 30 TestGraphs CFSNVNTGFSK2402MHzAnt1 CFSNVNTGFSK2441.6MHzAnt1 13 / 30 CFSNVNTGFSK2481.2MHzAnt1 14 / 30 NumberofHoppingChannel ConditionModeAntennaHoppingNumberLimitVerdict NVNTGFSKAnt16715Pass 15 / 30 TestGraphs HoppingNo.NVNTGFSK2402MHzAnt1 HoppingNo.NVNTGFSK2441.6MHzAnt1 16 / 30 HoppingNo.NVNTGFSK2481.2MHzAnt1 17 / 30 DwellTime ConditionModeFrequency (MHz) AntennaPulseTime (ms) TotalDwell Time(ms) Burst Count PeriodTime (ms) Limit (ms) Verdict NVNTGFSK 2402 Ant1 9.302251.1542726800400Pass 2441.69.301139.5151526800400Pass 2481.29.302232.552526800400Pass 18 / 30 TestGraphs DwellNVNTGFSK2402MHzAnt1OneBurst DwellNVNTGFSK2402MHzAnt1Accumulated 19 / 30 DwellNVNTGFSK2441.6MHzAnt1OneBurst DwellNVNTGFSK2441.6MHzAnt1Accumulated 20 / 30 DwellNVNTGFSK2481.2MHzAnt1OneBurst DwellNVNTGFSK2481.2MHzAnt1Accumulated 21 / 30 BandEdge ConditionModeFrequency(MHz)AntennaHoppingModeMaxValue(dBc)Limit(dBc)Verdict NVNTGFSK 2402 Ant1 No-Hopping-40.26-20Pass 2481.2No-Hopping-40.18-20Pass 22 / 30 TestGraphs BandEdgeNVNTGFSK2402MHzAnt1No-HoppingRef BandEdgeNVNTGFSK2402MHzAnt1No-HoppingEmission 23 / 30 BandEdgeNVNTGFSK2481.2MHzAnt1No-HoppingRef BandEdgeNVNTGFSK2481.2MHzAnt1No-HoppingEmission 24 / 30 BandEdge(Hopping) ConditionModeFrequency(MHz)AntennaHoppingModeMaxValue(dBc)Limit(dBc)Verdict NVNTGFSK 2402 Ant1 Hopping-46.45-20Pass 2481.2Hopping-45.18-20Pass 25 / 30 TestGraphs BandEdge(Hopping)NVNTGFSK2402MHzAnt1HoppingRef BandEdge(Hopping)NVNTGFSK2402MHzAnt1HoppingEmission 26 / 30 BandEdge(Hopping)NVNTGFSK2481.2MHzAnt1HoppingRef BandEdge(Hopping)NVNTGFSK2481.2MHzAnt1HoppingEmission 27 / 30 ConductedRFSpuriousEmission ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTGFSK 2402 Ant1 -37.89-20Pass 2441.6-36.89-20Pass 2481.2-36.65-20Pass 28 / 30 TestGraphs Tx.SpuriousNVNTGFSK2402MHzAnt1Ref Tx.SpuriousNVNTGFSK2402MHzAnt1Emission 29 / 30 Tx.SpuriousNVNTGFSK2441.6MHzAnt1Ref Tx.SpuriousNVNTGFSK2441.6MHzAnt1Emission 30 / 30 Tx.SpuriousNVNTGFSK2481.2MHzAnt1Ref Tx.SpuriousNVNTGFSK2481.2MHzAnt1Emission

Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 1 Specification For Approval Date: 2026 / 03 / 07 File No.: 2600307002 Version: 1.0 Customer： Customer P/N：/ P/N：3-G101-0067 Description : 915&2.4GHz Antenna Checked By: CustomerApproved By: 东莞市昶蒙电子有限公司 东莞市长安镇振安东路433号A栋 Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 2 Index: 1. Revision History / Page 3 2. Specification / Page 4 3. Antenna -S Parameter Test Data / Page 5 4. Mechanical and Packing Drawing / Page 6~ 7 5. Material Description and RoHS Test Report / Page 8 ~ end Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 3 1. Revision History Revision Date Change NotificationDescription 1.0 2026.03.07First edition Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 4 2. Specification Sample Photo A. Electrical Characteristics Frequency915&2.4GHz Impedance50 Ohm S.W.R.≦ 2.0 Polarizationlinear Antenna TypeDipole B. Material & Mechanical Characteristics Material of ConductorPCB Pull Test of Connector≧ 3Kgf Cable Type086 (Black) Mating Cycles≧300 C. Environmental Operation Temperature- 40 ̊C ~ + 65 ̊C Storage Temperature- 40 ̊C ~ + 80 ̊C Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 5 3. Antenna - S Parameter Test Data Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 6 Product Number: 3-G101-0067 Product Name: 915&2.4GHz Antenna Page 7 3. Mechanical Drawing 4. Material Description and RoHS Test Report 编号 品名 规格描述 数量 备注 料号 915M&2.4G天线 3-G101-0067 / / 上盖 下盖 1 2 客供 客供 1 1 / / 下固 SMA公头公针 3 4 客供 黑色 1 1 /射频线5086黑线1 1-P01-0030PCB6FR4 黑色1 A 技术要求： 1.标“*”尺寸为重点管控尺寸； 2.未标注公差依照图纸未注公差表； 3.电性符合规格书要求； 4.所有部件需符合RoHS要求； FIT ±0.1 ±0.2 ±0.3 ±0.5 ±0.8 0.1 Ø0.1 0.1 0.1 ±1.0° Kenny 2026-03-07 ±1.2 0.1 新发文 备注 日期 版本 描述 Hakam 2026-03-07 1/1 1000 未 注 公 差 表 A B C D 12 3 4 56 7 8 12 34 5 678 A B C D mm 版本 第三视角 0.5～6 ＞6～30 ＞30～120 ＞120～400 ＞400～ 角度 端子方向标准 ±45° ±90° 不管控 线长L≤100 100＜L≤200 线长L＞200 ＞1000 比 例 单 位 项 目 品 名 料 号 客户料号 射 频 结 构 审 核 页码 东 莞 市 昶 蒙 电 子 有 限 公 司 / / 2026-03-07 B A 四：装箱(以实际包装为准)。 三：装袋，每PE袋装20PCS产品. 二：装袋，每PE袋装1PCS产品. 一：成品天线 五：封箱，外箱贴我司生产标签。 page: 1 of 1 Kenny 915M&2.4G天线 2026-03-07 A / 产品包㼍㿴㤳 日期： 制作：审核： 成品名称 : 版本： 客户： Hakam