2BGSD-YLFFwireless speaker

MADE IN CHINA ■ Do not use the mobile phone fast charger to charge the wireless speaker. Please use the charger that matches the speaker (DC 5V 1A) to charge the wireless speaker. If it does not match, it may lead to failure of charging and even damage to the wireless speaker. (special attention should be paid here) ■ Do not put the wireless speaker in liquid or moisture to avoid damage to the built-in circuit board. ■ Do not wipe the wireless speaker with corrosive cloths. ■ Do not expose the wireless speaker to extremely high or low temperature environment, otherwise the electronic components inside the device will be damaged, and even some plastic parts will be damaged. ■ Do not put this wireless speaker in fire as it may explode. ■ Do not store the wireless speaker near sharp objects to avoid scratching the device. ■ Please do not drop the wireless speaker from a height, as the internal components will be damaged. ■ If you are not a professional, do not attempt to open or assemble the wireless speaker, otherwise the wireless speaker may be damaged. Please read the following maintenance instructions carefully, so as to ensure the service life of the speaker product: ■ Keep the wireless speakers away from heat, direct sunlight, moisture, water or any other liquids. ■ Do not perform any operation if the wireless speaker has been exposed to water, moisture or other liquids. ■ If the bad wireless speaker has been dropped from a height or damaged for other reasons, please do not continue to use it. ■ If the wireless speaker needs to be repaired, please seek professional help, do not dispose of it without authorization; improper disposal will bring huge risks! ■ Please do not handle the wireless speaker with wet hands. ■ Please do not place other irrelevant objects on any port of the wireless speaker. ■ Keep the wireless speakers away from dust, paper scraps, etc. ■ Keep wireless speakers out of the reach of children. ■ This wireless speaker is not a toy. Safety Tips Note: Consumers are requested to read the above precautions carefully. Consumers are responsible for the damage and safety accidents of wireless speakers caused by the above matters, and the merchants do not bear any responsibility! SolutionPossible causeProblem Low sound level Sound distorted No sound at all Wireless BT cannot connect Source ( Tablet, Mobile phone, Laptop, etc. ) volume too low. Low battery or battery dead Low battery or battery nearly deadLow battery or replace battery Low battery or replace battery Adjust source volume Media paused on source Speaker turned off Source ( Tablet, Mobile phone, Laptop. ) turned off. Speaker has been connected with other devices There are short functional obstacles in the product Restart the speaker Disable wireless BT of other source devices and search for wireless BT again Play media from source Turn the speaker on Turn the source on Troubleshooting Charging time Power input Micro TF card flash drive Multiple functions Built-In rechargeable battery Play time 3 hours DC 5V 1A Support up to 32GB Wireless play / FM radio / USB flash drive / Hands-free calling / TF card / AUX input TWS connection / Colorful lights 3.7V / 1800mAh 3 hours ( 70% Volume ) Unit size Frequency range Output power L10x W10 x H20cm 50MHz-20MHz 8W x 2 Horn size66mm Wireless distanceup to 10 metres Wireless version5.3 Specification ■ Long press the key to turn on the power of the speaker. ■ Insert the TF card or USB flash drive preloaded with songs, into the micro TF card slot or USB flash drive slot of the speaker correspondingly, sound message “USB mode” or “TF card mode” respectively will be heard. Speaker would automatically start playing songs from the TF card or USB flash drive. Stream music from TF card or USB flash drive ■ Search for model name of this product pairing link on your wireless device. ■ Enjoy your music. ■ If you don't need TWS mode, please press twice the button, you will hear "Du" voice then the speakers are not in TWS mode. When the speaker is not in use, turn it OFF in order to save the battery power. Tips!! ■ Long press the key to turn on the power of the speaker. ■ Plug the AUX cable into the AUX connector of the wireless speaker, and in FM Radio mode, the AUX cable is used as an auxiliary antenna for FM radio. ■ Short press key to each time until it reaches FM radio mode, sound message “The Radio Mode” will be heard. ■ Long press key or to skip selected stations. ■ Long press the key for to AUTO-SCAN the stations. ■ It will take few minutes to search all the stations. once all the stations are scanned, they get registered in memory, automatically. ■ Short press key or to decrease or increase the volume. Listening to FM radio Note: media can be controlled only through the source devices, while playing music in auxiliary mode. ■ Long press the key to turn on the power of the speaker. ■ Insert one end of the auxiliary cable (included) into the auxiliary port, sound message “AUX mode” will be heard. Plug the other end to the audio device (such as phone / MP3 / Player / computer / tablet...etc) ■ Select your favorite song at the source device to play. ■ Short press key or to decrease or increase the volume. Play music through “Auxiliary” mode ■ Long press the key to turn on the power of speaker. ■ Long press the button to switch the light mode, turn on the light, and turn the light off. Colorful Lights Function Answer incoming call Short press key Long press key Long press key Short press key Short press key Short press key 2 times Incoming call Reject incoming callIncoming call End the callIncoming call Increase volumeON the line Decrease volumeON the line Recall last number Standby mode and connected to a device Hands free modeOperation buttons Please ensure your mobile phone is paired with the wireless speaker. Hands free calling function Note: the above functions can be used in all mode, such as Wireless play mode, USB flash drive play mode, Mrico TF card play mode, as well as FM ra…

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DongguanLetuElectronicTechnologyCo.Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 9/21/24 U.S.AgentDesignation DongguanLetuElectronicTechnologyCo.Ltd.acknowledgestheirconsentforthefollowingcontactlocatedin theUnitedStatestoactastheiragentforserviceofprocessfortheequipmentforwhichauthorizationissought (FCCID:2BGSD-YLFF): NameandcompanyofU.S.agent:UUXGROUPINC PhysicalU.S.addressofagent:36South18thAvenue,SuiteABrighton,COUSA80601 FRNofU.S.agent:0033701590 EmailaddressofU.S.agent:[email protected] UUXGROUPINCacknowledgestheirobligationtoacceptserviceofprocessonbehalfofDongguanLetu ElectronicTechnologyCo.Ltd.. DongguanLetuElectronicTechnologyCo.Ltd.withtheFRN0035508951acceptsitsobligationtomaintainan agentforserviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheveris later. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature ChenChunke Manager DongguanLetuElectronicTechnologyCo.Ltd. Signature JackFu Manager UUXGROUPINC 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5

Page1of4FCCID: 2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ExternalPhotos Photo1 Photo2 Page2of4FCCID: 2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of4FCCID: 2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of4FCCID: 2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 ------End------

Label FCCID:2BGSD-YLFF

Page1 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. InternalPhoto s Photo1 Photo2 Page2 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 BT Antenna Page4 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 Photo10 Page6 of 6FCC ID: 2BGSD-YLFF DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo11 ------End------

RFExposureevaluation FCCID:2BGSD-YLFF 1.1.ApplicableStandard Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbeoperatedina mannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. Accordingto§1.1310and§2.1093RFexposurerequirement KDB447498v06:MobileandPortableDevicesRFExposureProceduresandEquipmentAuthorization Policies 1.2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSARtest exclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures, standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions, bymeasurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholdcondition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedonsource-based time-averagedmaximumconductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-up tolerance,andtheminimumtestseparationdistancerequiredfortheexposureconditions.22Theminimum testseparationdistanceisdeterminedbythesmallestdistancefromtheantennaandradiatingstructuresor outersurfaceofthedevice,accordingtothehostformfactor,exposureconditionsandplatformrequirements, toanypartofthebodyorextremityofauserorbystander(see5)ofsection4.1).ToqualifyforSARtest exclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustifiedbytheoperating configurationsandexposureconditionsofthetransmitterandapplicablehostplatformrequirements,typically intheSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRFexposureKDB procedures.WhennootherRFexposuretestingorreportingisrequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualifyfortheSARtest exclusion.Whenrequired,thedevicespecificconditionsdescribedintheotherpublishedRFexposureKDB proceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTT two-wayradios,handsets,laptops&tabletsetc.23“ [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)] · [√f(GHz)] ≤3.0for1-gSARand≤7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz • PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis ≤ 50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis<5 mm,adistanceof5mmaccordingto5)insection4.1isappliedtodetermineSARtestexclusion. 1.3.Manufacturingtolerance Page2of2 BR_EDR(Conducted) Frequency (MHz) BR_EDR_GFSK 240224412480 Target(dBm)1.01.01.0 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_π/4-DQPSK 240224412480 Target(dBm)1.01.01.0 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_8-DPSK 240224412480 Target(dBm)1.01.01.0 Tolerance ± (dB) 1.01.01.0 2.EvaluationResult EvaluationResults Band/Modef(GHz) Antenna Distance (mm) Max.RFoutputpower (includingtune-up tolerance) SARTest Exclusion Threshold SARTest Exclusion dBmmW BR_EDR 2.552.01.580.50<3Yes 3.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolledRFExposure andSARExclusionThresholdperKDB447498v06 .....................EndofReport.........................

Page1of39ReportNo.:AiTDG-240909029W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TESTREPORT ClientInformation: Applicant:DongguanLetuElectronicTechnologyCo.Ltd. Applicantadd.:LeTuIndustrialPark,XiaKeng1stRoad,ChangPing,DongGuan,China Manufacturer:DongguanLetuElectronicTechnologyCo.Ltd. Manufactureradd.:LeTuIndustrialPark,XiaKeng1stRoad,ChangPing,DongGuan,China ProductInformation: ProductName:wirelessspeaker ModelNo.: NR-5506,NR-198,NR-5507,NR-5508,NR-5509,NR-7013,NR-178,NR-555,NR- 188,NR-109,NR-666,NR-8018,NR-8013,NR-8015,NR-8016,NR-2088,NR-601 5M,NRG-501A,NR-8801,NR-4017,NR-7711,NR-6018M,NR-6019M,NR-8833, NS-2037,NS-2038,NRG-6601 BrandName:N/A FCCID: 2BGSD-YLFF Applicablestandards : FCCCFRTitle47Part15SubpartCSection15.247 PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:Sep.09,2024DateofTest:Sep.09,2024~Sep.12,2024 DateofIssue:Sep.13,2024TestResult:Pass ThisdevicedescribedabovehasbeentestedbyDongguanYaxu(AiT)TechnologyLimitedandthetest resultsshowthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditis applicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofDongguan Yaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedbyDongguanYaxu(AiT) TechnologyLimited,personalonly,andshallbenotedintherevisionofthedocument.Thistest reportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: EmiyaLinSimbaHuang Page2of39ReportNo.:AiTDG-240909029W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 1Contents Page COVERPAGE 1CONTENTS......................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................4 2.1StatementoftheMeasurementUncertainty................................................................................4 2.2MeasurementUncertainty............................................................................................................4 3TESTFACILITY..............................................................................................................................................................5 3.1Deviationfromstandard...............................................................................................................5 3.2Abnormalitiesfromstandardconditions.......................................................................................5 3.3TestLocation.................................................................................................................................5 4GENERALINFORMATION...........................................................................................................................................6 4.1Testfrequencies............................................................................................................................7 4.2EUTPeripheralList.......................................................................................................................8 4.3TestPeripheralList.......................................................................................................................8 4.4TESTMETHODOLOGY...............................................................................................................9 4.5DescriptionofTestModes..........................................................................................................10 5EQUIPMENTUSEDDURINGTEST.........................................................................................................................11 6TESTRESULTSANDMEASUREMENTDATA.....................................................................................................13 6.1Antennarequirement..................................................................................................................13 6.2PeakPowerMeasurement.........................................................................................................14 6.3FrequencySeparationand20dBBandwidth............................................................................16 6.4NumberofHoppingFrequency..................................................................................................18 6.5TimeofOccupancy(DwellTime)...............................................................................................19 6.6ConductedSpuriousEmissionsandBandEdgesTest.............................................................21 6.7Restrict-bandBand-edgeMeasurements..................................................................................23 6.8RadiatedEmissionsMeasurement............................................................................................25 6.9ConductedEmissions.................................................................................................................35 6.10Pseudorandomfrequencyhoppingsequence...........................................................................38 7TESTSETUPPHOTOGRAPHSOFEUT.................................................................................................................39 8EXTERNALPHOTOGRAPHSOFEUT....................................................................................................................39 9INTERNALPHOTOGRAPHSOFEUT.....................................................................................................................39 Page3of39ReportNo.:AiTDG-240909029W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. REPORTREVISERECORD Report Version ReviseTimeIssue…

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DongguanYaxu(AiT)TechnologyLimited ReportNo.: AiTDG-240909029W1 FCC ID : 2BGSD-YLFF Page1 of61 AppendixA RF Test Data for BT(BDR/EDR)(ConductedMeasurement) ProductName:wirelessspeaker TradeMark:N/A Test Model:NR-5506 EnvironmentalConditions Temperature:25.7°C RelativeHumidity:52.4 % ATM Pressure:101Kpa Test Engineer:Emiyalin Supervisedby:SimbaHaung DongguanYaxu(AiT)TechnologyLimited ReportNo.: AiTDG-240909029W1 FCC ID : 2BGSD-YLFF Page2 of61 Contents Page COVERPAGE 1Duty Cycle........................................................................................................................................................................................3 1.1Test Result............................................................................................................................................................................3 1.2Test Graphs...........................................................................................................................................................................4 2MaximumConductedPeakOutputPower........................................................................................................................................9 2.1Test Result............................................................................................................................................................................9 2.2Test Graphs.........................................................................................................................................................................10 320dBBandwidth..............................................................................................................................................................................15 3.1Test Result..........................................................................................................................................................................15 3.2Test Graphs.........................................................................................................................................................................16 4CarrierFrequencySeparation.........................................................................................................................................................21 4.1Test Result..........................................................................................................................................................................21 4.2Test Graphs.........................................................................................................................................................................22 5HoppingChannelNumber...............................................................................................................................................................24 5.1Test Result..........................................................................................................................................................................24 5.2Test Graphs.........................................................................................................................................................................25 6DwellTime ......................................................................................................................................................................................27 6.1Test Result..........................................................................................................................................................................27 6.2Test Graphs.........................................................................................................................................................................28 7RF ConductedSpuriousEmissions.................................................................................................................................................31 7.1Test Result..........................................................................................................................................................................31 7.2Test Graphs.........................................................................................................................................................................32 8Band-edgefor RF ConductedEmissions........................................................................................................................................41 8.1Test Result..........................................................................................................................................................................41 8.2Test Graphs.........................................................................................................................................................................42 9Restrict-bandband-edgemeasurements........................................................................................................................................54 9.1Test Result..........................................................................................................................................................................54 9.2Test Graphs.........................................................................................................................................................................56 DongguanYaxu(AiT)TechnologyLimited ReportNo.: AiTDG-240909029W1 FCC ID : 2BGSD-YLFF Page3 of61 1 Duty Cycle 1.1Test Result ModeFrequency(MHz)Duty Cycle(%)Correction Factor 1/T (kHz) 1-DH1240231.25.062.63 1-DH1244131.25.062.63 1-DH1248031.065.082.7 2-DH1240231.215.062.63 2-DH1244131.455.022.56 2-DH12480324.952.56 3-DH12402324.952.56 3-DH12441324.952.56 3-DH1248032.014.952.56 DongguanYaxu(AiT)TechnologyLimited ReportNo.: AiTDG-240909029W1 FCC ID : 2BGSD-YLFF Page4 of61 1.2Test Graphs Test Graphs 1-DH12402MHz 1-DH12441MHz…

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Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -1.26174 -30.0801 -7.18716 2450 -0.765802 -36.5604 -7.48023 2500 -0.585582 -22.0315 -6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page1of2 FCCID:2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2 FCCID:2BGSD-YLFF DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------