2BHSN-SP-XJ19HEATING INSOLES

C5266091_X24_Ed.2 1/1 ShenZhen Diode Optoelectric technology co., LTD “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: ShenZhen Diode Optoelectric technology co., LTD FRN：0035722925 Grantee code: 2BHSN FCC ID: 2BHSN-SP-XJ19 Contact Name: Lixue feng Address: Room 907, Longhua Haicheng Business Building, Shenzhen Telephone No: 18948717126 Fax No: 18948717126 Email: [email protected] i. [ShenZhen Diode Optoelectric technology co., LTD] (“the applicant”) 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. The applicant must sign this certification. ii. [ShenZhen Diode Optoelectric technology co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [ShenZhen Diode Optoelectric technology co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered List as an entity producing “covered”equipment . Date: 2024/07/26 Applicant’s Name: Lixue feng Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Modeldifferencedeclarationletter DifferencesDescription FCCID:2BHSN-SP-XJ19 WeShenZhenDiodeOptoelectrictechnologyco.,LTDstate: Product： HEATINGINSOLES ModelName ： SP-XJ19,SP-XJ14,SP-XJ15,SP-XJ05,SP-XJ16, SP-XJ17,SP-XJ18,SP-XJ20,SP-XJ21,SP-XJ22 We(ShenZhenDiodeOptoelectrictechnologyco.,LTD)herebystatethatallthemodelsare electricalidenticalincludingthesamesoftwareparameterandhardwaredesign(i.e.,circuit design,ChipLayout,RFmodule/circuit,ntennatype(s)andantennalocation,componentson Chip,etc.,),samemechanicalstructureanddesign(includingproductenclosure,materials, etc.,),theonlydifferenceisthemodelnameandappearancecolor. Signatory Date:07-25.2024 <Signature> Name ： Lixuefeng Title ： Manager Company：ShenZhenDiodeOptoelectrictechnologyco.,LTD Address:907,LonghuaHaichengBusinessBuilding,Shenzhen

C5266091_X8_Ed.1 1/1 Letter of Authorization ShenZhen Diode Optoelectric technology co., LTD Company: ShenZhen Diode Optoelectric technology co., LTD Address: 907, Longhua Haicheng Business Building, Shenzhen Product Name: HEATING INSOLES Model Number: SP-XJ19, SP-XJ14,SP-XJ15,SP-XJ05,SP-XJ16,SP-XJ17 SP-XJ18,SP-XJ20,SP-XJ21,SP-XJ22 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Lixue feng Date: 2024.07.26 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 ShenZhen Diode Optoelectric technology co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2024.7.26 Subject: Request for Confidentiality FCC ID: 2BHSN-SP-XJ19 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name: Lixue feng Title: Manager 2024.07.29

Page1of3ReportNo.:FCS202406188 Externalphotos Photo1 Photo2 Page2of3ReportNo.:FCS202406188 Photo3 Photo4 Page3of3ReportNo.:FCS202406188 Photo5 Photo6

LabelandLabelLocation FCCID:2BHSN-SP-XJ19

Page1of7ReportNo.:FCS202406188 Internalphotos Photo1 Photo2 Page2of7ReportNo.:FCS202406188 Photo3 Photo4 Page3of7ReportNo.:FCS202406188 Photo5 Photo6 Page4of7ReportNo.:FCS202406188 Photo7 PCBANT

FCCRFExposure EUTDescription:HEATINGINSOLES Testtype.:SP-XJ19 Seriesmodel:SP-XJ14,SP-XJ15,SP-XJ05,SP-XJ16,SP-XJ17 SP-XJ18,SP-XJ20,SP-XJ21,SP-XJ22 FCCID:2BHSN-SP-XJ19 Equipmenttype:PortableDevice 1.TestProcedure AccordingtoKDB447498D01GeneralRFExposureGuidancev06 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattest separationdistances ≤ 50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/ (min.testseparationdistance,mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-g extremitySAR, where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbefore calculationTheresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparation distanceis ≤ 50mmandfortransmissionfrequenciesbetween100MHzand6GHz. Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmisappliedto determineSARtestexclusion. 2.TestResultofRFExposureEvaluation [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]=0.0552077/5*√2.402=0.017112≤3.0ThresholdatwhichnoSAR requiredisand≤3.0for1-gSAR,Separationdistanceis5mm. Mode Channel Freq.(MHz) Maximum Conducted Output Power(PK) AntennaGain (dBi) Antenna gainnumeric Maxtune- uppower (W) GFSK 2402-12.581.811.520.0552077 2440-14.991.811.520.0316956 2480-14.291.811.520.0372391

⚫CDB13 PIFA antenna design specification: This PIFA antenna is used in HW-B01 modules with whole layout board which size is 4.2mm*8.5mm and thickness is 0.4mm（FR4） 1 1 Normal Dongle PIFAAntenna The performance of S11 HW-B01as blow show and the working frequency band cover 2.4G ISM and bandwidth is wider than normal antenna. 1-2Normal Dongle PIFA S11 performance Manufacture's NameDongguan City fifty-five degrees intelligent technology LTD AddressJiangrui High Salary Science Park, Liangping West Road, Liaobu Town, Dongguan City, Guangdong Province The gain of this antenna 2D and 3D as blow show and the maximum gain is about 1.5dB. 1-3Normal Dongle PIFA gain 2440MHz

FCCTestReport ReportNo:FCS202406188W02 Issuedfor Applicant: ShenZhenDiodeOptoelectrictechnologyco.,LTD Address: 907,LonghuaHaichengBusinessBuilding,Shenzhen ProductName: HEATINGINSOLES BrandName: N/A ModelName: SP-XJ19 SeriesModel: SP-XJ14,SP-XJ15,SP-XJ05,SP-XJ16,SP-XJ17 SP-XJ18,SP-XJ20,SP-XJ21,SP-XJ22 FCCID: 2BHSN-SP-XJ19 IssuedBy:FluxComplianceServiceLaboratory Add:Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-Tech Industrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com Page 2 of38ReportNo.:FCS202406188W02 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TESTRESULTCERTIFICATION Applicant’sName......................: ShenZhenDiodeOptoelectrictechnologyco.,LTD Address......................................: 907,LonghuaHaichengBusinessBuilding,Shenzhen Manufacture'sName................: DongguanCityfifty-fivedegreesintelligenttechnologyLTD Address......................................: JiangruiHighSalarySciencePark,LiangpingWestRoad,LiaobuTown, DongguanCity,GuangdongProvince ProductDescription ProductName ........................... : HEATINGINSOLES BrandName ............................... : N/A ModelName..............................: SP-XJ19 SeriesModel..............................: SP-XJ14,SP-XJ15,SP-XJ05,SP-XJ16,SP-XJ17 SP-XJ18,SP-XJ20,SP-XJ21,SP-XJ22 TestStandards..........................:FCCRulesandRegulationsPart15SubpartC,Section247 TestProcedure..........................:ANSIC63.10:2013 ThisdevicedescribedabovehasbeentestedbyFluxComplianceServiceLaboratory,thetestresults showthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditis applicableonlytothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofFluxCompliance ServiceLaboratory,thisdocumentmaybealteredorrevisedbyFluxComplianceServiceLaboratory, personalonly,andshallbenotedintherevisionofthedocument.. DateofTest..................................: Date(s)ofperformanceoftests . :Jun26,2024~July1,2024 DateofIssue ................................. :July10,2024 TestResult....................................:Pass Testedby: (ScottShen) Reviewedby : (DukeQian) Approvedby: (JackWang) Page 3 of38ReportNo.:FCS202406188W02 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TableofContentsPage 1.SUMMARYOFTESTRESULTS...........................................................................................6 1.1TESTFACTORY............................................................................................................7 1.2MEASUREMENTUNCERTAINTY.................................................................................7 2.GENERALINFORMATION...................................................................................................8 2.1GENERALDESCRIPTIONOFTHEEUT.......................................................................8 2.2BLOCKDIGRAMSHOWINGTHECONFIGURATIONOFSYSTEMTESTED............10 2.3DESCRIPTIONOFNECESSARYACCESSORIESANDSUPPORTUNITS...............11 2.4EQUIPMENTSLIST.....................................................................................................12 3.CONDUCTEDEMISSIONMEASUREMENT.......................................................................13 4.6DBBANDWIDTH...............................................................................................................17 4.1Limit..............................................................................................................................17 4.2TestProcedure.............................................................................................................17 4.3Testsetup.....................................................................................................................17 4.4Testresults...................................................................................................................17 4.5OriginalTestData.........................................................................................................18 5.CONDUCTEDOUTPUTPOWER........................................................................................21 5.1LIMIT............................................................................................................................21 5.2TESTPROCEDURE.....................................................................................................21 5.3TESTSETUP...............................................................................................................21 5.5TESTRESULTS...........................................................................................................21 6.BANDEDGEANDSPURIOUS(CONDUCTED)..................................................................22 6.1LIMIT............................................................................................................................22 6.2TESTPROCEDURE.....................................................................................................22 6.3TESTSETUP...............................................................................................................22 6.4TESTRESULTS...........................................................................................................23 6.5Originaltestdata..........................................................................................................23 7.POWERSPECTRALDENSITY...........................................................................................25 7.1LIMIT............................................................................................................................25 7.2TESTPROCEDURE.....................................................................................................25 7…

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