2A577-EPEFMElectronic Peak Flow Meter

AttestationStatementLetterI FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:___02/28/2026___________ Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCApplicationforFCCID:__ 2A577-EPEFM __ TaianDaluMedicalInstrumentCo.,Ltd. _certifiesthattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedforreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Sincerely, Applicant’sSignature: Client’ssignature:Yu'eWu Client’sname&title:Yu'eWu/Managementrepresentative Contactinformation/address:TaianDaluMedicalInstrumentCo.,Ltd./WestPartofYitianmen Street,Hi-techZone,Taian271000,Shandong,P.R.China

AttestationStatementLetterII FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:___02/28/2026_______________ Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCApplicationforFCCID:___2A577-EPEFM___TaianDaluMedicalInstrumentCo.,Ltd.___ certifiesthat,asofthedateofthefilingoftheapplication,theapplicantisnotidentifiedonthe CoveredListasanentityproducing“covered”equipment. Sincerely, Applicant’sSignature: Client’ssignature:Yu'eWu Client’sname&title:Yu'eWu/Managementrepresentative Contactinformation/address:TaianDaluMedicalInstrumentCo.,Ltd./WestPartofYitianmen Street,Hi-techZone,Taian271000,Shandong,P.R.China

FCCAgentAuthorizationLetter FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:02/28/2026 SUBJECT:FCCApplicationforFCCID:___2A577-EPEFM_______ ToWhomItMayConcern: We,theundersigned,herebyauthorize___Emily.Deng____________in__Fangguang Inspection&TestingCo.Ltd______onourbehalf,toapplytotheFederalCommunications Commissionforourequipment.Anyandallactscarriedoutby_FangguangInspection& TestingCo.Ltd__onourbehalfshallhavethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,theapplicant, arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301oftheAnti-DrugActof 1988,21USC853a,andnopartytotheapplicationissubjecttoadenialoffederalbenefits pursuanttothatsection. Sincerely, Client’ssignature:Yu'eWu Client’sname&title:Yu'eWu/Managementrepresentative Contactinformation/address:TaianDaluMedicalInstrumentCo.,Ltd./WestPartofYitianmen Street,Hi-techZone,Taian271000,Shandong,P.R.China Client’ssignature:

Rev11/20/07 TaianDaluMedicalInstrumentCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID:2A577-EPEFM PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitTypeFileName BlockBlock Schematicssch OperationalDescriptionOperationdescriptiion Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealsorequestthe followingattachmentstobekeptconfidentialforashortperiodoftimeuntilwithin180days fromthedateofsubmittingtheFCC. ExhibitTypeFileName ExternalPhotosEUTExternalPhoto InternalPhotosEUTInternalPhoto TestSetupPhotosTestSetupPhotos Manualusermanual Sincerely, Applicant’sSignature: Client’ssignature: Client’sname&title:Yu'eWu/Managementrepresentative Contactinformation/address:TaianDaluMedicalInstrumentCo.,Ltd./WestPartof YitianmenStreet,Hi-techZone,Taian271000,Shandong,P.R.China

FCCID:2A577-EPEFM RFExposureevaluation Accordingto447498D04InterimGeneralRFExposureGuidancev01 ERP/EIRP=P T +G T −L C ERP/EIRPistheequivalent(oreffective)radiatedpower[insameunitsasP T ,typicallydBW, dBm,orpowerspectraldensity(psd)],relativetoeitheradipoleantenna(ERP)oran isotropicantenna(EIRP). P T isthetransmitteroutputpower,indBW,dBm,orpsd(poweroveraspecifiedreference bandwidth). G T isthegainofthetransmittingantenna,indBd(ERP)ordBi(EIRP). L C isthesignalattenuationintheconnectingcablebetweenthetransmitterandthe antenna,indB. For2.4Gmode Frequency (MHz) Output power (dBm) Output power (mw) Ant gain (dBi) EIRP (dBm) EIRP (mw) ERP (dBm) ERP (mw) Distance (cm) P th (mW) 24403.922.47-3.680.241.06-1.910.640.52.8 ERP=EIRP−2.15dB WORSECASE 0.64mW<2.8mW Remark: ThenSARevaluationisnotrequired

Global United Technology Services Co., Ltd. Report No.: GTLS2026030039F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 38 TEST REPORT Applicant: Taian Dalu Medical Instrument Co., Ltd. Address of Applicant: West Part of Yitianmen Street, Hi-techZone, Taian 271000, Shandong,P.R.China Manufacturer Taian Dalu Medical Instrument Co., Ltd. Address of Manufacturer: West Part of Yitianmen Street, Hi-techZone, Taian 271000, Shandong,P.R.China Equipment Under Test (EUT) Product Name: Electronic Peak Flow Meter Model No.: DL-DF01, DL-DF04, DL-DF05 FCC ID: 2A577-EPEFM Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: February 03, 2026 Date of Test: February 05, 2026- February 25, 2026 Date of report issued: February 28, 2026 Test Result: PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTLS20260300390F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 38 2 Version Version No. Date Description 00 February 28, 2026 Original Tested By: Date: February 28, 2026 Test Engineer Prepared By: Date: February 28, 2026 Project Engineer Check By: Date: February 28, 2026 Reviewer Report No.: GTLS20260300390F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 38 3 Contents Page 1 COVER PAGE ..................................................................................................................................... 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS............................................................................................................................................... 3 4 TEST SUMMARY ...................................................................................................................................... 4 5 GENERAL INFORMATION ....................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ............................................................................................................. 5 5.2 TEST MODE .......................................................................................................................................... 7 5.3 DESCRIPTION OF SUPPORT UNITS ............................................................................................................ 7 5.4 DEVIATION FROM STANDARDS ................................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ........................................................................................ 7 5.6 TEST FACILITY ...................................................................................................................................... 7 5.7 TEST LOCATION .................................................................................................................................... 7 5.8 ADDITIONAL INSTRUCTIONS..................................................................................................................... 7 6 TEST INSTRUMENTS LIST ...................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA ...................................................................................... 10 7.1 ANTENNA REQUIREMENT ...................................................................................................................... 10 7.2 AC POWER LINE CONDUCTED EMISSION ................................................................................................ 11 7.3 CONDUCTED OUTPUT POWER ............................................................................................................... 12 7.4 CHANNEL BANDWIDTH.......................................................................................................................... 13 7.5 POWER SPECTRAL DENSITY ................................................................................................................. 14 7.6 SPURIOUS EMISSION IN NON-RESTRICTED & RESTRICTED BANDS .............................................................. 15 7.6.1 Conducted Emission Method ..................................................................................................... 15 7.6.2 Radiated Emission Method ........................................................................................................ 16 8 TEST SETUP PHOTO ............................................................................................................................ 38 9 EUT CONSTRUCTIONAL DETAILS ....................................................................................................... 38 Report No.: GTLS20260300390F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 38 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203/15.247 (c) Pass AC P…

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ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 1 of 16 AppendixA:DTSBandwidth TestResult TestModeAntennaChannel DTSBW[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24020.6642401.6562402.3200.5PASS 24400.6682439.6562440.3240.5PASS 24800.6722479.6522480.3240.5PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 2 of 16 BLE_1M_Ant1_2480 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 3 of 16 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaChannel OCB[MHz] FL[MHz]FH[MHz] BLE_1MAnt1 24021.21232401.35062402.5629 24401.12462439.37852440.5031 24801.12152479.37932480.5008 TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 4 of 16 BLE_1M_Ant1_2480 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 5 of 16 AppendixC:Maximumconductedoutputpower TestResult TestModeAntennaChannelResult[dBm]Limit[dBm]Verdict BLE_1MAnt1 24023.83≤30PASS 24403.92≤30PASS 24803.67≤30PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 6 of 16 BLE_1M_Ant1_2480 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 7 of 16 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaChannelResult[dBm/3-100kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt1 2402-10.67≤8.00PASS 2440-10.54≤8.00PASS 2480-11.22≤8.00PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 8 of 16 BLE_1M_Ant1_2480 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 9 of 16 AppendixE:Bandedgemeasurements TestResult TestModeAntennaChNameChannelRefLevel[dBm]Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 Low24023.39-37.13≤-16.61PASS High24803.25-49.32≤-16.75PASS TestGraphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 10 of 16 AppendixF:ConductedSpuriousEmission TestResult TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 2402 Reference3.573.57---PASS 30~10003.57-52.74≤-16.43PASS 1000~265003.57-24.45≤-16.43PASS 2440 Reference3.423.42---PASS 30~10003.42-51.34≤-16.58PASS 1000~265003.42-25.01≤-16.58PASS 2480 Reference3.123.12---PASS 30~10003.12-52.99≤-16.88PASS 1000~265003.12-25.11≤-16.88PASS ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 11 of 16 TestGraphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 12 of 16 BLE_1M_Ant1_2402_1000~26500 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 13 of 16 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 14 of 16 BLE_1M_Ant1_2480_1000~26500 ReportNo.:GTSL2026022801F01 GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page 15 of 16 AppendixG:DutyCycle TestResult TestModeAntennaChannel ONTime [ms] Period [ms] XDC[%]xFactor LimitVerdict BLE_1MAnt1 24020.430.620.693569.351.59------ 24400.420.610.688568.851.62------ 24800.420.610.688568.851.62------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 Report…

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TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 -RFsister Test Report of JDY-23 Bluetooth Antenna TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 1. ElectricalCharacteristics No.ItemSpecifications 1 WorkingCentralFrequency2450MHz 2 BandWidth ±75MHz(2400～2500MHz) 3 Gain 4 V.S.W.R(inBW) ≤4.3 5 PolarizationLinear 6 AzimuthBeamwidthOmni-directional 7 Impedance阻抗50 2. ReturnLossandSmithChat ReturnLoss （ -6.79）-（ - 3.68 ）dbi TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 V.S.W.R SmithChat TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 3.PhysicalTestEnvironment E5071C网络分析仪 4.Shapeoftheantenna Efficiency ： TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 Hpattern Fre(Mhz)Maxgain(dB)Degree 2400(MHz)-6.79dB114.00deg 2450(MHz)-4.92dB112.00deg 2500(MHz)-4.07dB108.00deg TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 E1pattern Fre(Mhz)Maxgain(dB)Degree 2400(MHz)-5.29dB164.00deg 2450(MHz)-4.80dB160.00deg 2500(MHz)-4.87dB-20.00deg TestDate:2019.05.06 地址：深圳市宝安区67区洪浪北二路凌云大厦10楼 电话：17688988025陈先生www.RFsister.com 聚焦·开放·分享 E2pattern Fre(Mhz)Maxgain(dB)Degree 2400(MHz)-5.86dB174.00deg 2450(MHz)-4.78dB-70.00deg 2500(MHz)-3.68dB-68.00deg