2BF2N-DT20STVSOUND

TV SOUND-DT20S Speaker accessories: Conponents function description Infrared remote control function Wireless function NOTE: short press “炜瀲” button to volume adjustment, long press "炜瀲" button to the preview/next songs. USER MANUAL TV SOUND-DT20S USER MANUAL User manual*1 Power adapter*1 1. Volume up/previous song 3. Music play/pause button 5. Power on/off button 7.DC12V IN interface 9. Coaxial digital audio input socket 11.U-disk/USB interface 2. Volume down/next song Sleep/Wake Udisk mode Volume up Previous song Volume down HDMI ARC mode Treble adjustment Silent AUX input mode Play/pause Next song Coaxial digital audio input mode Scene sound effect selection Bass adjustment Please put in two AAA batterys before use NOTE: 1.Please use the treble and bass adjustment kevs with caution, over-adjustment may cause sound distortion, you can press the scene sound effect mode key(MOVE/MUSIC/DIALOG) to reset. 2.Without disconnecting the power, the speaker will remember the mode before the last shutdown when it is turned on next time. 3.In COAX/HDMIARC/AUX modes, the button has no function, press button is the mute function. 4. Mode switching button 6. Indicator light 8. 3.5 mmAUX input socket 10. HDMlARC input interface 12. Wall-mount Dimension Coaxial audio cable*1 3.5mm AUX cable*1 Remote control*1 52mm        “ ” “ ” 1. When the speaker is used for the first time, after the speaker is connected to the power adapter, it will automatically turn on and enter to wireless mode, the blue light will be flashing , and accompanied by voice prompt. then the speaker has been in standby search status. 2.Open the phone's wireless function, searched the speaker's wireless name : "SOUND-DT20L" and paired, when the speaker connected successfully, a promot sound will beep, at the same time, the blue liaht stop flashing, you can start using the speaker to play music ; the next time with the same device matching, the speaker will automatically to connected. DC IN AUX COAX HDMI ARC USB DC IN AUX COAX HDMI ARC USB DC IN AUX COAX HDMI ARC USB Speaker connect to TV'S SPDIF/ COAXIAL interface Coaxial COAXIAL INPUT MODE 1. As shown, use the coax audio cable connected your device and the speaker. 2. in the boot state ,you can press the "COAX" button on the remote control enter to the coaxial mode or press the mode switching button once to the coaxial audio mode on speaker, at the speaker changed successful you can hear the voice prompt of this mode and the indicator light is red. 3. Set sound source output from your TV first (setting--sound advanced audio output select digital audio output) . 4. Short press “+” “-” button to volume up/down. 5. Short press “ ” button to mute. NOTE: Please select audio source output of the TV, can not be used directly. DC IN AUX COAX HDMI ARC USB Connect the TV’s HDMI ARC interface HDMI ARC INPUT MODE ARC Tips: 1. The HDMl ARC interface of the speaker must be connected to the TV’S HDMl ARC (the interface with audio return function). if it is a normal HDMI interface, it may not be used to connect the speaker. 2. Please use the HDMl cable in the TV accessories or other high-quality HDMI cables, Low-quality HDMl cables may not be available. 3.Due to the different processing chips of the TV, the response time of the HDMl mode may be different. so some TVs use the HDMl interface to connect to the speakers for the first time, the sound output time may be delayed by about 10 seconds. please know that. thanks! 1. In the boot state .as shown, use the HDMl audio cable connected your device and the speaker. 2. You can press the "HDMI" button on the remote control enter to the HDMl mode or press the mode switching button twice to the HDMl audio mode on speaker. at the speaker changed successful you can hear the voice prompt and the indicator light is purple. 3. Set digital audio output from your TV first (setting--sound advanced audio output select HDMl ARC audio output) . 4. Short press “+” “-” button to volume up/down. 5. Short press “ ” button to mute. NOTE: Please select audio source output of the TV, can not be used directly. Play Udisk function In the boot state, when inserted the Udisk, the speaker will automatically converted to Udisk mode, and with a prompt voice, the music will be played automatically after In the boot state, the external devices (such as mobile phones, computers/MP3 and other audio output devices) with the 3.5mm audio cable connected to the speaker, this time the speaker will automatically switch to the AUX input mode, there will be a tone, then the speaker can play the audio from the device. 2 seconds, short press “炜瀲” button to volume adjustment, long press "炜瀲" button to the preview/next songs. NOTE: the Udisk must have Mp3 audio files or WAV format files . External audio AUX input function Audio output from Mobile Phones Audio output from TV or Other Devices Using the environment and storage environment 1. Operating environment Temperature: 0 ~ 40 DEG C, humidity: 0% ~ 85%RH 2. Storage environment Temperature -30 ~ 60 DEG C, humidity:0% ~ 90%RH Troubleshooting 1.No sound in HDMI ARC mode Please confirm the speaker whether HDMl mode is currently entered ,press the “HDMI" button of the remote control to enter the coaxial mode; short press the “M” button to enter the HDMl mode, when the speaker enter to HDMl mode ,the indicator light will turn purple and you can hear the voice prompt. Set digital audio output from your TV first (setting--sound advanced audio output-select HDMl ARC output) , devices compatibility will be vary, see your device's documentation for more information to set. Please read carefully the precautions in the manual about the HDMlARC function. 2.No sound in Coaxial audio mode Please confirm the speaker whether Coaxial mode is currently entered ,press the “COAX" button of the remote control to enter the coaxial mode ; short press the “M” button to enter the coaxial mode, when the speaker enter to COAX mode ,the indica…

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- Shenzhen Datong Kechuang Technology Co., LTD - Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 6/14/2024 U.S. Agent Designation [ Shenzhen Datong Kechuang Technology Co., LTD] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BF2N-DT20S Name and company of U.S. agent: 【USA MEIHUA TRADING INC】 Physical U.S. address of agent: 【5379 Pine Valley Ct Boulder CO 80301 United States】 FRN of U.S. agent: 【0033406166】 Email address of U.S. agent: 【[email protected]】 [USA MEIHUA TRADING INC] acknowledges their obligation to accept service of process on behalf of [Shenzhen Datong Kechuang Technology Co., LTD]. Shenzhen Datong Kechuang Technology Co., LTD with the FRN [0035326024] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Tingting Tingting Manager Shenzhen Datong Kechuang Technology Co., LTD Signature Harley Quinn Manager USA MEIHUA TRADING INC 48_[mo del] US_Agent_2.911(d)(7) - U, V05

Page1of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ExternalPhotos Photo1 Photo2 Page2of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 Photo10 Page6of6 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo11 ------End------

Label PMN:TVSOUND HVIN:DT20S FCCID:2BF2N-DT20S IC:32358-DT20S Size:L20*W15mm Note:Thelabelissilk-screenonthesample

FCCID:2BF2N-DT20S Page1of4 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. InternalPhotos Photo1 Photo2 FCCID:2BF2N-DT20S Page2of4 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 FCCID:2BF2N-DT20S Page3of4 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 FCCID:2BF2N-DT20S Page4of4 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 ------End------ Antenna

RFExposureevaluation FCCID:2BF2N-DT20S Exposurecategory:Generalpopulation/uncontrolledenvironment EUTType:ProductionUnit DeviceType:PortableDevice 1.Reference Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbe operatedinamannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergy levelinexcessoftheCommission’sguidelines. Accordingto§1.1310and§2.1091RFexposureiscalculated. KDB447498D01:MobileandPortableDevicesRFExposureProceduresandEquipment AuthorizationPolicies 2.Limit LimitsforMaximumPermissibleExposure(MPE)/ControlledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100)* (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 LimitsforMaximumPermissibleExposure(MPE)/UncontrolledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100)* (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequencyinMHz *=Plane-waveequivalentpowerdensity 3.MPECalculationMethod PredicationofMPElimitatagivendistance Equationfrompage18ofOETBulletin65,Edition97-01 S=PG/4πR² Where:S=powerdensity P=powerinputtoantenna G=powergainoftheantennainthedirectionofinterestrelativetoanisotropicradiator R=distancetothecenterofradiationoftheantenna 4.AntennaInformation EUTcanonlyuseantennascertificatedasfollowsprovidedbymanufacturer; Antenna ModelNo. ofantenna: Typeofantenna:Gainoftheantenna(Max.)Frequencyrange: BT/PCBantennaAntenna:1.7dBiFor2.4G 5.ManufacturingTolerance BR_EDR(Conducted) Frequency (MHz) BR_EDR_GFSK 240224412480 Target(dBm)-0.26-0.83-2.25 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_π/4-DQPSK 240224412480 Target(dBm)0.28-0.34-1.58 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_8-DPSK 240224412480 Target(dBm)1.26-0.6-1.04 Tolerance±(dB)1.01.01.0 6.StandaloneMPEResult AsdeclaredbytheApplicant,theEUTisawirelessdeviceusedinafixapplication,atleast 20cmfromanybodypartoftheuserornearbypersons;fromthemaximumEUTRFoutput power,theminimumseparationdistance,r=20cm,aswellasthegainoftheusedantennais refertosection4,theRFpowerdensitycanbeobtained. ModulationType OutputpowerAntenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBmmW BT2.261.6831.71.4790.00051.0000 7.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1091fortheuncontrolled RFExposureofmobiledevice. ----------------THEENDOFREPORT---------------

Page1of39ReportNo.:AIT24041902FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TESTREPORT ClientInformation: Applicant:ShenzhenDatongKechuangTechnologyCo.,LTD Applicantadd.: 3,BuildingB,BailiIndustrialZone,DalangStreet,LonghuaDistrict, Shenzhen,China Manufacturer:ShenzhenDatongKechuangTechnologyCo.,LTD Manufactureradd.: 3,BuildingB,BailiIndustrialZone,DalangStreet,LonghuaDistrict, Shenzhen,China ProductInformation: ProductName:TVSOUND ModelNo.:DT20S BrandName:N/A FCCID: 2BF2N-DT20S Applicablestandards: FCCCFRTitle47Part15SubpartCSection15.247 PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:Apr.19,2024DateofTest:Apr.19,2024~Apr.29,2024 DateofIssue:Apr.30,2024TestResult:Pass ThisdevicedescribedabovehasbeentestedbyDongguanYaxu(AiT)TechnologyLimitedandthe testresultsshowthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements. Anditisapplicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofDongguan Yaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedbyDongguanYaxu(AiT) TechnologyLimited,personalonly,andshallbenotedintherevisionofthedocument.Thistest reportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: EmiyaLinSimbaHuang Page2of39ReportNo.:AIT24041902FW1 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.:AIT24041902FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. REPORTREVISERECORD Report Version ReviseTimeIssuedDateValidVersionNotes V1.0/ Apr.30,2024 ValidInitialrelease Page4of39ReportNo.:AIT24041902FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guang…

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DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page1 of61 AppendixA RF Test Data for BT(BDR/EDR)(ConductedMeasurement) ProductName:TVSOUND TradeMark:N/A Test Model:DT20S EnvironmentalConditions Temperature:25.2°C RelativeHumidity:52.2 % ATM Pressure:101Kpa Test Engineer:Emiyalin Supervisedby:SimbaHaung DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S 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.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page3 of61 1 Duty Cycle 1.1Test Result ModeFrequency(MHz)Duty Cycle(%)Correction Factor 1/T (kHz) 1-DH12402324.952.56 1-DH1244131.215.062.63 1-DH1248031.225.062.56 2-DH1240232.184.922.56 2-DH1244132.014.952.56 2-DH12480324.952.56 3-DH1240232.84.842.5 3-DH1244132.224.922.56 3-DH12480324.952.56 DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page4 of61 1.2Test Graphs Test Graphs 1-DH12402MHz 1-DH12441MHz DongguanYaxu…

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DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page48 of61 Ref π/4DQPSK/HCH/No Hop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page49 of61 Ref π/4DQPSK/HCH/Hop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page50 of61 Ref 8DPSK/LCH/NoHop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page51 of61 Ref 8DPSK/LCH/Hop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page52 of61 Ref 8DPSK/HCH/NoHop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page53 of61 Ref 8DPSK/HCH/Hop DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page54 of61 9 Restrict-bandband-edgemeasurements 9.1 Test Result Test Mode HoppingFreq. Power [dBm] Gain Duty Factor E [dBuV/m] Detector Limit [dBuV/m] Verdict GFSK Off2310.0-48.542-48.72PEAK74Pass Off2310.0-57.1724.9545.04AV54Pass Off2363.376-46.282-50.98PEAK74Pass Off2339.376-54.524.9547.71AV54Pass Off2390.0-49.962-47.3PEAK74Pass Off2390.0-56.9924.9545.22AV54Pass Off2483.5-502-47.26PEAK74Pass Off2483.5-56.5125.0645.81AV54Pass Off2489.704-47.522-49.74PEAK74Pass Off2484.736-55.8725.0646.45AV54Pass Off2500.0-49.892-47.37PEAK74Pass Off2500.0-57.4225.0644.9AV54Pass π/4DQPSK Off2310.0-51.082-46.18PEAK74Pass Off2310.0-56.5924.9245.59AV54Pass Off2340.72-45.632-51.63PEAK74Pass Off2337.936-54.2624.9247.92AV54Pass Off2390.0-49.52-47.76PEAK74Pass Off2390.0-56.9324.9245.25AV54Pass Off2483.5-50.362-46.9PEAK74Pass Off2483.5-56.1624.9546.05AV54Pass Off2486.8-46.782-50.48PEAK74Pass Off2488.504-55.7224.9546.49AV54Pass Off2500.0-49.312-47.95PEAK74Pass Off2500.0-56.624.9545.61AV54Pass 8DPSK Off2310.0-49.962-47.3PEAK74Pass Off2310.0-56.8324.8445.27AV54Pass Off2339.76-47.432-49.83PEAK74Pass Off2339.472-54.924.8447.2AV54Pass DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page55 of61 Off2390.0-50.572-46.69PEAK74Pass Off2390.0-56.524.8445.6AV54Pass Off2483.5-50.232-47.03PEAK74Pass Off2483.5-55.3824.9546.83AV54Pass Off2492.584-45.862-51.4PEAK74Pass Off2483.512-55.3924.9546.82AV54Pass Off2500.0-48.692-48.57PEAK74Pass Off2500.0-56.4724.9545.74AV54Pass DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page56 of61 9.2Test Graphs Restrict-bandband-edgemeasurements_HoppingOff_ GFSK_PEAK(LowChannel) Restrict-bandband-edgemeasurements_HoppingOff_ GFSK_Average(LowChannel) DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page57 of61 Restrict-bandband-edgemeasurements_HoppingOff_ GFSK_PEAK(HighChannel) Restrict-bandband-edgemeasurements_HoppingOff_ GFSK_Average(HighChannel) DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page58 of61 Restrict-bandband-edgemeasurements_HoppingOff_π/4-DQPSK_PEAK(LowChannel) Restrict-bandband-edgemeasurements_HoppingOff_π/4-DQPSK_Average(LowChannel) DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page59 of61 Restrict-bandband-edgemeasurements_HoppingOff_π/4-DQPSK_PEAK(HighChannel) Restrict-bandband-edgemeasurements_HoppingOff_π/4-DQPSK_Average(HighChannel) DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page60 of61 Restrict-bandband-edgemeasurements_HoppingOff_8DPSK_PEAK(LowChannel) Restrict-bandband-edgemeasurements_HoppingOff_8DPSK_Average(LowChannel) DongguanYaxu(AiT)TechnologyLimited ReportNo.: AIT24041902FW 1 FCC ID : 2BF2N-DT20S Page61 of61 Restrict-bandband-edgemeasurements_HoppingOff_8DPSK_PEAK(HighChannel) Restrict-bandband-edgemeasurements_HoppingOff_8DPSK_Average(HighChannel) ---TheEnd---

Page1of2 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2 FCCID:2BF2N-DT20S DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------