2BMLU-HE-M010Vagus Nerve Device

Rev1/26/2023 ShenzhenXiaoheTechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-10 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BMLU-HE-M010 (“ShenzhenXiaoheTechnologyCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationissought isnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. (“ShenzhenXiaoheTechnologyCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationissought doesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.orany ofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature)Huangpeta (Applicantprintedname) Rev1/26/2023 ShenzhenXiaoheTechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-10 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BMLU-HE-M010 (“ShenzhenXiaoheTechnologyCo.,Ltd.”)certifiesthat,asofthedateofthefilingoftheapplication, ShenzhenXiaoheTechnologyCo.,Ltd.isnotidentifiedontheCoveredList(asaspecificallynamedentity oranyofitssubsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)Huangpeta

ShenzhenXiaoHeTechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkelilndustrialPark,No.6,InnerRing NorthRoad,LongxinCommunity,BaolongStreet,LonggangDistrict,ShenzhenCity ProductName:VagusNerveDevice FCCID:2BMLU-HE-M010 Model(s):HE-M010,HE-E001,HE-E002 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShenzhenXiaoHeTechnologyCo.,Ltd.](“theapplicant”)designate[CELLTINC.] NOTE1forthepurposeofacceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:CELLTINC. Address:140121STST#12958 SACRAMENTO,CA95811,USA FRN:0036412567 Applicant Companyname:ShenzhenXiaoHe TechnologyCo.,Ltd. Address:Room403,BuildingCandD, YingkelilndustrialPark,No.6,InnerRing NorthRoad,LongxinCommunity,Baolong Street,LonggangDistrict,ShenzhenCity FRN:0036363398 ShenzhenXiaoHeTechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.4 ContactName:ThompsonLim TelephoneNo:001-424-3474188 Email:[email protected] FCCGranteeCode:2BMLU ContactName:Huangpeta TelephoneNo:13538214502 Email:[email protected] Signature: Title:Manager Signature: Title:Manager Date:2026-8-10Date:2026-8-10 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

ShenzhenXiaoheTechnologyCo.,Ltd. Familymodelsdeclarationletter August10,2026 We ShenzhenXiaoheTechnologyCo.,Ltd. Of Room403,BuildingCandD,YingkelilndustrialPark,No.6,InnerRingNorthRoad, LongxinCommunity,BaolongStreet,LonggangDistrict,ShenzhenCity Declareunderoursoleresponsibilitythattheproduct FCCID:2BMLU-HE-M010 Product:VagusNerveDevice ModelNumber:HE-M010,HE-E001,HE-E002 Allthemodelsarethesamecircuitandmodule,exceptthemodelNo.. Huangpeta/Manager E-mail:[email protected] Phone:13538214502 Fax:13538214502 Address: Room403,BuildingCandD,YingkelilndustrialPark,No.6,Inner RingNorthRoad,LongxinCommunity,BaolongStreet,Longgang District,ShenzhenCity

ShenzhenXiaoHeTechnologyCo.,Ltd. Date:2026-8-10 Product/ModelNumber:VagusNerveDevice/HE-M010 FCCID:2BMLU-HE-M010 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:Huangpeta ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:13538214502 Onbehalfof:ShenzhenXiaoHeTechnologyCo.,Ltd.

ShenzhenXiaoHeTechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August10,2026 Subject;RequestforConfidentiality FCCID:2BMLU-HE-M010 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:Huangpeta Title:Manager

Size:14mm*20mm FCC ID: 2BMLU-HE-M010

FCC ID: 2BMLU-HE-M010 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093， Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 5 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, We use 5mm as separation distance to calculated. Bluetooth DTS: Transmit Frequency (GHz) Mode Measured Power (dBm) Tune-up power (dBm) Max tune-up power(dBm) Result calculation 1g SAR 2.402 GFSK -0.480±1 1 0.3902 3 Remark：1. PCB Antenna gain is 2.5 dBi, So a SAR test is not required

Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page1of23 RF Test Data Duty Cycle ....................................................................................................................................................................... 2 Maximum Peak Conducted Output Power ...................................................................................................................... 5 -6dB Bandwidth ............................................................................................................................................................... 8 Occupied Channel Bandwidth ....................................................................................................................................... 11 Maximum Power Spectral Density Level ...................................................................................................................... 14 Band Edge .................................................................................................................................................................... 17 Conducted RF Spurious Emission ................................................................................................................................ 20 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page2of23 Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1M 2402 Ant1 26.8 5.72 5.97 NVNT BLE 1M 2440 Ant1 26.78 5.72 5.97 NVNT BLE 1M 2480 Ant1 25.76 5.89 6.21 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page3of23 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page4of23 Duty Cycle NVNT BLE 1M 2480MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page5of23 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Conducted Power (W) Limit Conducted(dBm) Verdict NVNT BLE 1M 2402 Ant1 -0.48 0.0009 30 Pass NVNT BLE 1M 2440 Ant1 -0.81 0.00083 30 Pass NVNT BLE 1M 2480 Ant1 -1.49 0.00071 30 Pass Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page6of23 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page7of23 Peak Power NVNT BLE 1M 2480MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page8of23 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 Ant1 0.6374 0.5 Pass NVNT BLE 1M 2440 Ant1 0.6742 0.5 Pass NVNT BLE 1M 2480 Ant1 0.6749 0.5 Pass Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page9of23 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page10of23 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page11of23 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT BLE 1M 2402 Ant1 1.2167 NVNT BLE 1M 2440 Ant1 1.2665 NVNT BLE 1M 2480 Ant1 1.2667 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page12of23 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page13of23 OBW NVNT BLE 1M 2480MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page14of23 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 Ant1 -17.83 8 Pass NVNT BLE 1M 2440 Ant1 -18.2 8 Pass NVNT BLE 1M 2480 Ant1 -19.13 8 Pass Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page15of23 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page16of23 PSD NVNT BLE 1M 2480MHz Ant1 Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page17of23 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -48.97 -20 Pass NVNT BLE 1M 2480 Ant1 -52.51 -20 Pass Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page18of23 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page19of23 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page20of23 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -42.58 -20 Pass NVNT BLE 1M 2440 Ant1 -41.91 -20 Pass NVNT BLE 1M 2480 Ant1 -40.92 -20 Pass Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page21of23 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page22of23 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission Report No.: SZNTT26031623E1-1 SZNTT-TR728-0 Page23of23 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

Antenna Specification SPECIFICATIONS Frequency（MHz）2400-2480 PeakGain（dBi）2.499 AverageGain（dBi）＞-4 VSWR＜3.2 Impedance（Ω）50Ω AntennaType PCB Antenna PolarizationLinear Z X Y Physical antenna and dimensions Passive S-parameters of antenna: Standing Wave Ratio (VSWR), Return Loss, and Smith Chart Antenna efficiency and gain Frequency（MHz）Gain（dBi）Effciency（%）AverageGain（dBi）Efficiency（dB） 24001.43359.329%-2.717-2.267 24100.92751.861%-3.416-2.852 24200.82952.112%-3.166-2.831 24300.88149.299%-3.258-3.072 24401.19250.672%-3.144-2.952 24501.68853.067%-2.735-2.752 24602.19459.423%-2.276-2.260 24702.11856.680%-2.438-2.466 24802.49961.727%-2.112-2.095 Average1.52954.908%-2.806-2.616 Peak2.49961.727%-2.112-2.095 ANT 2440MHz 2D-Theta Pattern ANT 2440MHz 2D-Phi Pattern ANT 2440MHz 3D-Horizontal Pattern ANT 2440MHz 3D-Vertical Pattern ANT 2440MHz 3D-Total Pattern Manufacturer: Shenzhen XiaoHe Technology Co., Ltd. Address: Room 403, Building C and D, Yingkeli lndustrial Park, No. 6, Inner Ring NorthRoad, Longxin Community, Baolong Street, Longgang District, Shenzhen City

Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26031623E1-1 SZNTT-TR828-0 Tel:0755-27889935 Web:http://www.ntt-testing.com Page 1 of 29 TEST REPORT Applicant : Shenzhen XiaoHe Technology Co., Ltd. Address : Room 403, Building C and D, Yingkeli lndustrial Park, No. 6, Inner Ring NorthRoad, Longxin Community, Baolong Street, Longgang District, Shenzhen City Manufacturer : Shenzhen XiaoHe Technology Co., Ltd. Address : Room 403, Building C and D, Yingkeli lndustrial Park, No. 6, Inner Ring NorthRoad, Longxin Community, Baolong Street, Longgang District, Shenzhen City Product Name : Vagus Nerve Device Model Number : HE-M010, HE-E001, HE-E002 Trademark : N/A FCC ID : 2BMLU-HE-M010 Test Date : Aug. 03, 2026 – Aug.07, 2026 Date of Report : Aug. 07, 2026 Test Result : This device described above has been tested by NTT, and the test results show that the equipment under test (EUT) is in compliance with the Standard requirements. And it is applicable only to the tested sample identified in the report. Test Procedure Used: Standards : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 KDB 558074 D01 15.247 Meas Guidance v05r02 Prepared by(Test Engineer): Cindy Qin Approved(Supervisor): Ken Wu Approved(Manager): Abel Yu Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26031623E1-1 SZNTT-TR828-0 Tel:0755-27889935 Web:http://www.ntt-testing.com Page 2 of 29 TABLE OF CONTENT 1. General Information .................................................................................... 4 1.1. Description of Device (EUT) ..................................................................................................................... 4 1.2. Channel List ................................................................................................................................................ 4 1.3. Summary of test result .............................................................................................................................. 5 1.4. Special Accessories and Auxiliary Equipment ....................................................................................... 5 1.5. Test mode .................................................................................................................................................... 5 1.6. Test configuration ...................................................................................................................................... 5 1.7. Block Diagram ............................................................................................................................................ 6 1.8. Test Conditions ........................................................................................................................................... 6 1.9. Measurement Uncertainty (95% confidence levels, k=2) .................................................................... 6 1.10. Test Facility ............................................................................................................................................... 7 1.11. Test Equipment ......................................................................................................................................... 8 2. Conducted emission at the mains terminals test .................................. 10 2.1. Limit ............................................................................................................................................................ 10 2.2. Test Setup ................................................................................................................................................. 10 2.3. Test Procedure ......................................................................................................................................... 10 2.4. Test Result ................................................................................................................................................. 11 3. Radiated Spurious Emissions ................................................................. 13 3.1. Limit ............................................................................................................................................................ 13 3.2. Test Setup ................................................................................................................................................. 14 3.3. Test Procedure ......................................................................................................................................... 16 3.4. Test Result ................................................................................................................................................ 17 4. Conducted Spurious Emissions .............................................................. 22 4.1. Limit ............................................................................................................................................................ 22 4.2. Test Setup ................................................................................................................................................. 22 4.3. Test Procedure ......................................................................................................................................... 22 4.4. Test Result ................................................................................................................................................ 23 5. Band Edge Measurement ......................................................................... 24 5.1. Limit ............................................................................................................................................................ 24 5.2. Test setup .......................................................................................................................................…

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