2AYOQ-MRX1MARINE

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Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Authorization v02 Page 1 of 1 SPIRIT LLC Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 2021/4/14 SUBJECT: FCC Application for (FCC ID: 2AYOQ-MRX1) To Whom It May Concern: We, the undersigned, hereby authorize Alisa Feng in Shenzhen Huaxia Testing Technology Co., Ltd at 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Shenzhen Huaxia Testing Technology Co., Ltd on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, (Must be signed by the person that is listed on the FCC Website) Signature: Contact name: Sasha Susterman Company name: SPIRIT LLC Address: 1400 NW 159TH ST, BAY 101 MIAMI GARDENS, FL 33169

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Confidentiality v02 Page 1 of 1 SPIRIT LLC Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AYOQ-MRX1 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name 1. Block Diagram, 2. Schematics, 3. Operational Description 1. 2AYOQ-MRX1 -Block diagram 2. 2AYOQ-MRX1 -SCH 3. 2AYOQ-MRX1-Operational description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below for an initial period of xxxx (ie- “45”, “90” or “180”) days: Exhibit Type File Name N/A N/A Signature: Contact name: Sasha Susterman Company name: SPIRIT LLC Address: 1400 NW 159TH ST, BAY 101 MIAMI GARDENS, FL 33169

FCCID:2AYOQ-MRX1

FCCID:2AYOQ-MRX1 FCCID:2AYOQ-MRX1

ShenzhenHuaxiaTestingTechnologyCo.,Ltd 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V04 ReportTemplateRevisionDate:2018-07-06 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlytothesample(s) tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20210300364E-02 Applicant:SPIRITLLC AddressofApplicant:1400NW159thST(BAY101)MiamiGardens,FL33169 EquipmentUnderTest(EUT): EUTName:MARINE ModelNo.:MRX1 BrandName:DS18 FCCID:2AYOQ-MRX1 Standards: 47CFRPart1.1307 47CFRPart2.1091 KDB447498D01GeneralRFExposureGuidancev06 DateofReceipt:2021-3-29 DateofTest:2021-3-29to2021-4-13 DateofIssue:2021-4-13 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy： (JunLi) ReviewedBy: (AresLiu) ApprovedBy: (SheekLuo) ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20210300364E-02 Page:2of6 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20210300364E-02Rev.01 Initialreport 2021-4-13 ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20210300364E-02 Page:3of6 2Contents Page 1VERSION.............................................................................................................................................................................2 2CONTENTS.........................................................................................................................................................................3 ..................................................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION....................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT....................................................................................................................................4 3.3GENERALDESCRIPTIONOFBTCLASSIC........................................................................................................................4 4RFEXPOSUREEVALUATION.......................................................................................................................................5 4.1RFEXPOSURECOMPLIANCEREQUIREMENT..................................................................................................................5 4.1.1Limits....................................................................................................................................................................5 4.1.2TestProcedure...................................................................................................................................................5 ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20210300364E-02 Page:4of6 3GeneralInformation 3.1ClientInformation Applicant:SPIRITLLC AddressofApplicant: 1400NW159thST(BAY101)MiamiGardens,FL33169 Manufacturer:SPIRITLLC AddressofManufacturer: 1400NW159thST(BAY101)MiamiGardens,FL33169 Factory:EasternPartnerLimited AddressofFactory:Room1413,ICCTower,FuhauSanRoad,FutianCBD,Shenzhen 518048,China 3.2GeneralDescriptionofEUT ProductName:MARINE ModelNo.:MRX1 TradeMark:DS18 HardwareVersion:1121-00MX1-KB02 SoftwareVersion:S1 EUTSupportsRadios application: Bluetoothdualmode:2402-2480MHz PowerSupply: DC12V 3.3GeneralDescriptionofBTClassic OperationFrequency:2402MHz~2480MHz BluetoothVersion:V4.2 ModulationTechnique:FrequencyHoppingSpreadSpectrum(FHSS) ModulationType:GFSK,π/4DQPSK TransferRate:1Mbps/2Mbps NumberofChannel:79 HoppingChannelType:AdaptiveFrequencyHoppingsystems ProductType:MobilePortableFixLocation TestSoftwareofEUT:FCCAssist2.4 AntennaType:PCBantenna AntennaGain:-0.58dBi ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20210300364E-02 Page:5of6 4RFExposureEvaluation 4.1RFExposureComplianceRequirement 4.1.1Limits AccordingtoFCCPart1.1310:Thecriterialistedinthefollowingtableshallbeusedtoevaluatethe environmentimpactofhumanexposuretoradiofrequency(RF)radiationasspecifiedinpart1.1307(b) F=FrequencyinMHz FriisFormula Friistransmissionformula:Pd=(Pout*G)/(4*Pi*R 2 ) Where Pd=powerdensityinmW/cm2 Pout=outputpowertoantennainmW G=gainofantennainlinearscale Pi=3.1416 R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm2.Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. 4.1.2TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleand highestchannelindividually. ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20210300364E-02 Page:6of6 1)ForBTClassic AntennaGain:-0.58dBi AntennaGain:ThemaximumGainmeasuredinfullyanechoicchamberis0.87inlinearscale. OutputPowerIntoAntenna&RFExposureEvaluationDistance: MeasurementData GFSKmode TestchannelPeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm)(mW) Lowest(2402MHz)-6.310-7.5±1.0-6.50.224 Middle(2441MHz)-5.430-6.5±1.0-5.50.282 Highest(2480MHz)-4.030-5±1.0-40.398 π/4DQPSKmode TestchannelPeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm)(mW) Lowest(2402MHz)-5.540-6.5±1.0-5.50.282 Middle(2441MHz)-4.670-6±1.0-50.316 Highest(2480MHz)-3.240-4.5±1.0-3.50.447 Theworstcase: Maximumtune-up Power (mW) Antenna Gain (dBi) Power Density atR=20cm (mW/cm 2 ) LimitResult 0.447-0.580.000081.0PASS Note:1)RefertoreportNo.CQASZ20210400364E-02forEUTtestMaxConductedPeakOutputPowervalue. 2)Pd=(Pout*G)/(4*Pi*R 2 )=(0.447*0.87)/(4*3.1416*20 2 )=0.00007 BDRandBLEcannotsimultaneoustran…

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Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building,Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com Report Template Version: V03 Report Template Revision Date: Mar.1st, 2017 Test Report * In the configuration tested, the EUT complied with the standards specified above. The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full. Cover page Report No. :CQASZ20210300364E-01 Applicant:SPIRIT LLC Address of Applicant:1400 NW 159th ST ( BAY 101 ) Miami Gardens , FL 33169 Equipment Under Test (EUT): Product:MARINE Model No.:MRX1 Brand Name:DS18 FCC ID:2AYOQ-MRX1 Standards:47 CFR Part 15, Subpart C Date of Test:2021-3-29 to 2021-4-13 Date of Issue:2021-4-13 Test Result :PASS* Tested By： (Jun Li) Reviewed By: (Ares Liu) Approved By: (Sheekluo) Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20210300364E-01 Page: 2 of 71 1Version Revision History Of Report Report No.Version Description Issue Date CQASZ20210300364E-01Rev.01 Initial report 2021-4-13 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20210300364E-01 Page: 3 of 71 2 Test Summary Test ItemTest RequirementTest methodResult Antenna Requirement 47 CFR Part 15, Subpart C Section 15.203/15.247 (c) ANSI C63.10 (2013)PASS AC Power Line Conducted Emission 47 CFR Part 15, Subpart C Section 15.207 ANSI C63.10 (2013)N/A Conducted Peak Output Power 47 CFR Part 15, Subpart C Section 15.247 (b)(1) ANSI C63.10 (2013)PASS 20dB Occupied Bandwidth 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Carrier Frequencies Separation 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Hopping Channel Number 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Dwell Time 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Pseudorandom Frequency Hopping Sequence 47 CFR Part 15, Subpart C Section 15.247(b)(4)&TCB Exclusion List (7 July 2002) ANSI C63.10 (2013)PASS Band-edge for RF Conducted Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS RF Conducted Spurious Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS Radiated Spurious emissions 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS Restricted bands around fundamental frequency (Radiated Emission) 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS N/A: Not Applicable Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20210300364E-01 Page: 4 of 71 3 Contents Page COVER PAGE.....................................................................................................................................................................1 1 VERSION.......................................................................................................................................................................... 2 2 TEST SUMMARY............................................................................................................................................................ 3 3CONTENTS...................................................................................................................................................................... 4 4 GENERAL INFORMATION........................................................................................................................................... 5 4.1 C LIENTINFORMATION................................................................................................................................................. 5 4.2 G ENERALDESCRIPTION OFEUT................................................................................................................................. 5 4.3 A DDITIONALINSTRUCTIONS........................................................................................................................................7 4.4 T ESTENVIRONMENT....................................................................................................................................................8 4.5 D ESCRIPTION OFSUPPORTUNITS................................................................................................................................8 4.6 S TATEMENT OF THE MEASUREMENT UNCERTAINTY....................................................................................................9 4.7 T ESTLOCATION.........................................................................................................................................................10 4.8 T ESTFACILITY...........................................................................................................................................................10 4.9 A BNORMALITIES FROMSTANDARDCONDITIONS...................................................................................................... 10 4.10 O THERINFORMATIONREQUESTED BY THECUSTOMER.......................................................................................... 10 4.11 E QUIPMENTLIST......................................................................................................................................................11 5 TEST RESULTS AND MEASUREMENT DATA......................................................................................................12 5.1 A NTENNAREQUIREMENT.......................................................................................................................................... 12 5.2 C ONDUCTEDPEAKOUTPUTPOWER..........................................................................................................................13 5.3 20 DBOCCUPYBANDWIDTH..................................................................................…

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FCCID:2AYOQ-MRX1 1Photographs-EUTTestSetup 1.1RadiatedEmission 9KHz~30MHz: 30MHz~1GHz: FCCID:2AYOQ-MRX1 Above1GHz: