2AXI9IT100True wireless earbud

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: {1) This device may not cause harmful interference {2) this device must accept any interference received, including interference that may cause undesired operation Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 15 FCC ID: 2AXI9IT100

． 。 DATE Equipment A utorisation Division Federal Communications Commission 7 43 5 Oakland Mills Road Columbia, MD 21046 F CC ID: 2AXl9I丁100 P roduct Name: E90 Reauest for Confidentialitv Pursuant to Sections 0.457 and 0.459 of the commission ’ s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality- for example ... ) • Schematics • Block diagram • Ope「ationdescription These mate「ialscontain trade secrets and proprieta叩informationand a「e not customβrily released to the public. The public disclosure of this information might be harmful to the company and provide unjustifi畏d benefits to our competitors. 月U 列 llM闭什 俨 引／ ？、 < Signature> N ame Billy Liu T i t l e C o m p a n y Shenzhen RB-LINK Intelligent Techn。lδ

Model No.: E90

Model No.: E90

RF Exposure Evaluation Statement Product Name: True wireless earbud Model No.：IT100, E90 FCC ID：2AXI9IT100 1.1 RF Exposure Compliance Requirement 1.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 Standalone SAR test exclusion considerations 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 Exclusion Threshold condition, listed below, is satisfied. 1.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 17  The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion 1.1.3 EUT RF Exposure Operational Mode: EDR （8-DPSK worst case） Channel Maximum Peak Conducted Output Power (dBm) Tune up tolerance (dB) Maximum tune-up Power Calculated value Exclusion threshold (dBm) (mW) 2402MHZ 6.74 ±1 7.74 5.94 1.84 3.0 2441MHz 7.46 ±1 8.46 7.01 2.19 2480MHz 8.23 ±1 9.23 8.38 2.64 Conclusion: the calculated value ≤3.0, SAR is exempted.

Page 1 of95 BlueAsia of Technical Services(Shenzhen) Co.,Ltd. Add:No. 448, Bulong Road, Bantian Street, Longgang District, Shenzhen, China Tel: +86-755-23059481 Email: [email protected] TEST REPORT Product Name : True wireless earbud Brand Mark : ENACFIRE Model No. : IT100, E90 FCC ID : 2AXI9IT100 Report Number : BLA-EMC-202009-A2102 Date of Sample Receipt : 2020/9/07 Date of Test : 2020/9/07 to 2020/9/27 Date of Issue : 2020/9/27 Test Standard : 47 CFR Part 15, Subpart C 15.247 Test Result : Pass Prepared for: Shenzhen RB-LINK Intelligent Technology Co., Ltd Room 401, Building C , Runhe lndustrial Park, Zhentou Road,Nandong,Huangpu Community,Xinqiao Street , Baoan District ,Shenzhen Prepared by: BlueAsia of Technical Services(Shenzhen) Co.,Ltd. IOT Test Centre of BlueAsia No. 448 Bulong Road, Bantian Street, Longgang District, Shenzhen,China TEL: +86-755-23059481 Compiled by: Review by: Approved by: Date: 2020/9/27 Report No.: BLA-EMC-202009-A2102 Page 2 of95 BlueAsia of Technical Services(Shenzhen) Co.,Ltd.Tel: +86-755-23059481 Email: [email protected] REPORT REVISE RECORD Version No. Date Description 00 2020/9/27 Original Report No.: BLA-EMC-202009-A2102 Page 3 of95 BlueAsia of Technical Services(Shenzhen) Co.,Ltd.Tel: +86-755-23059481 Email: [email protected] TABLE OF CONTENTS 1 TEST SUMMARY ........................................................................................................................................6 2 GENERAL INFORMATION .........................................................................................................................7 3 GENERAL DESCRIPTION OF E.U.T. .........................................................................................................7 4 TEST ENVIRONMENT ................................................................................................................................8 5 TEST MODE ................................................................................................................................................8 6 MEASUREMENT UNCERTAINTY ..............................................................................................................8 7 DESCRIPTION OF SUPPORT UNIT...........................................................................................................9 8 LABORATORY LOCATION .........................................................................................................................9 9 TEST INSTRUMENTS LIST ..................................................................................................................... 10 ANTENNA REQUIREMENT .............................................................................................................................. 14 CONCLUSION ...................................................................................................................................................................... 14 CONDUCTED PEAK OUTPUT POWER .......................................................................................................... 15 LIMITS ............................................................................................................................................................................. 15 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................... 15 TEST DATA ........................................................................................................................................................................ 16 CONDUCTED EMISSIONS AT AC POWER LINE (150KHZ-30MHZ) ............................................................. 17 LIMITS ............................................................................................................................................................................. 17 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................... 17 PROCEDURE ................................................................................................................................................................... 17 TEST DATA ........................................................................................................................................................................ 19 RADIATED SPURIOUS EMISSIONS ............................................................................................................... 21 LIMITS ............................................................................................................................................................................. 21 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................... 22 PROCEDURE ................................................................................................................................................................... 22 TEST DATA ........................................................................................................................................................................ 24 RADIATED EMISSIONS WHICH FALL IN THE RESTRICTED BANDS ......................................................... 36 LIMITS ............................................................................................................................................................................. 36 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................... 37 PROCEDURE ................................................................................................................................................................... 37 TEST D…

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ReportNo.:BLA-EMC-202009-A2102 Page 51 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10APPENDIX 10.1APPENDIX:20DBEMISSIONBANDWIDTH TestResult TestModeAntennaChannel20dbEBW[MHz]FL[MHz]FH[MHz]Limit[MHz]Verdict DH1Ant1 24021.1012401.4482402.549---PASS 24411.1042440.4452441.549---PASS 24801.1012479.4482480.549---PASS 2DH1Ant1 24021.3922401.2952402.687---PASS 24411.3922440.2952441.687---PASS 24801.3952479.2952480.690---PASS 3DH1Ant1 24021.3622401.3132402.675---PASS 24411.3652440.3102441.675---PASS 24801.3682479.3102480.678---PASS ReportNo.:BLA-EMC-202009-A2102 Page 52 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 53 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 54 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 55 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.2APPENDIX:MAXIMUMCONDUCTEDOUTPUTPOWER TestResult TestModeAntennaChannelResult[dBm]Limit[dBm]Verdict DH1Ant1 24023.7<=20.97PASS 24414.55<=20.97PASS 24805.19<=20.97PASS 2DH1Ant1 24026.1<=20.97PASS 24416.88<=20.97PASS 24807.55<=20.97PASS 3DH1Ant1 24026.74<=20.97PASS 24417.46<=20.97PASS 24808.23<=20.97PASS ReportNo.:BLA-EMC-202009-A2102 Page 56 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 57 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 58 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 ReportNo.:BLA-EMC-202009-A2102 Page 59 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.3APPENDIX:CARRIERFREQUENCYSEPARATION TestResult TestModeAntennaChannelResult[MHz]Limit[MHz]Verdict DH1Ant1Hop1>=0.736PASS 2DH1Ant1Hop1>=0.930PASS 3DH1Ant1Hop1>=0.912PASS ReportNo.:BLA-EMC-202009-A2102 Page 60 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop ReportNo.:BLA-EMC-202009-A2102 Page 61 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.4APPENDIX:TIMEOFOCCUPANCY TestResult TestModeAntennaChannel BurstWidth [ms] TotalHops[Num]Result[s]Limit[s]Verdict DH1Ant1Hop0.383300.127<=0.4PASS DH3Ant1Hop1.641700.279<=0.4PASS DH5Ant1Hop2.891100.318<=0.4PASS ReportNo.:BLA-EMC-202009-A2102 Page 62 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop ReportNo.:BLA-EMC-202009-A2102 Page 63 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] DH5_Ant1_Hop ReportNo.:BLA-EMC-202009-A2102 Page 64 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.5APPENDIX:NUMBEROFHOPPINGCHANNELS TestResult TestModeAntennaChannelResult[Num]Limit[Num]Verdict DH1Ant1Hop79>=15PASS 2DH1Ant1Hop79>=15PASS 3DH1Ant1Hop79>=15PASS ReportNo.:BLA-EMC-202009-A2102 Page 65 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop ReportNo.:BLA-EMC-202009-A2102 Page 66 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.6APPENDIX:BANDEDGEMEASUREMENTS TestResult TestModeAntennaChNameChannel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH1Ant1 Low24023.51-56.19<=-16.5PASS High24805.18-55.37<=-14.82PASS LowHop_24023.45-55.81-16.55PASS HighHop_24804.91-55.03-15.09PASS 2DH1Ant1 Low24023.48-55.45<=-16.52PASS High24805.02-55.56<=-14.98PASS LowHop_24023.55-56.06-16.45PASS HighHop_24804.86-54.88-15.14PASS 3DH1Ant1 Low24023.42-56.26<=-16.58PASS High24805.01-55.19<=-14.99PASS LowHop_24023.41-55.72-16.59PASS HighHop_24804.86-54.58-15.14PASS ReportNo.:BLA-EMC-202009-A2102 Page 67 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_Low_2402 DH1_Ant1_High_2480 DH1_Ant1_Low_Hop_2402 DH1_Ant1_High_Hop_2480 ReportNo.:BLA-EMC-202009-A2102 Page 68 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_Low_2402 2DH1_Ant1_High_2480 ReportNo.:BLA-EMC-202009-A2102 Page 69 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_Low_Hop_2402 2DH1_Ant1_High_Hop_2480 3DH1_Ant1_Low_2402 ReportNo.:BLA-EMC-202009-A2102 Page 70 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_High_2480 3DH1_Ant1_Low_Hop_2402 3DH1_Ant1_High_Hop_2480

ReportNo.:BLA-EMC-202009-A2102 Page 71 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 10.7APPENDIX:CONDUCTEDSPURIOUSEMISSION TestResult TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH1Ant1 2402 Reference3.473.47---PASS 30~100030~1000-67.155<=-16.531PASS 1000~265001000~26500-18.009<=-16.531PASS 2441 Reference4.094.09---PASS 30~100030~1000-66.806<=-15.915PASS 1000~265001000~26500-22.528<=-15.915PASS 2480 Reference5.195.19---PASS 30~100030~1000-67.99<=-14.81PASS 1000~265001000~26500-20.751<=-14.81PASS 2DH1Ant1 2402 Reference3.463.46---PASS 30~100030~1000-67.456<=-16.538PASS 1000~265001000~26500-20.302<=-16.538PASS 2441 Reference4.244.24---PASS 30~100030~1000-68.009<=-15.763PASS 1000~265001000~26500-22.09<=-15.763PASS 2480 Reference5.025.02---PASS 30~100030~1000-67.854<=-14.978PASS 1000~265001000~26500-26.572<=-14.978PASS 3DH1Ant1 2402 Reference3.403.40---PASS 30~100030~1000-68.315<=-16.604PASS 1000~265001000~26500-20.333<=-16.604PASS 2441 Reference4.254.25---PASS 30~100030~1000-68.438<=-15.755PASS 1000~265001000~26500-22.582<=-15.755PASS 2480 Reference4.944.94---PASS 30~100030~1000-68.09<=-15.057PASS 1000~265001000~26500-22.829<=-15.057PASS ReportNo.:BLA-EMC-202009-A2102 Page 72 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TestGraphs DH1_Ant1_2402_0~Reference DH1_Ant1_2402_30~1000 DH1_Ant1_2402_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 73 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] DH1_Ant1_2441_0~Reference DH1_Ant1_2441_30~1000 DH1_Ant1_2441_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 74 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] DH1_Ant1_2480_0~Reference DH1_Ant1_2480_30~1000 DH1_Ant1_2480_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 75 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_2402_0~Reference 2DH1_Ant1_2402_30~1000 2DH1_Ant1_2402_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 76 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_2441_0~Reference 2DH1_Ant1_2441_30~1000 2DH1_Ant1_2441_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 77 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 2DH1_Ant1_2480_0~Reference 2DH1_Ant1_2480_30~1000 2DH1_Ant1_2480_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 78 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_2402_0~Reference 3DH1_Ant1_2402_30~1000 3DH1_Ant1_2402_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 79 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_2441_0~Reference 3DH1_Ant1_2441_30~1000 3DH1_Ant1_2441_1000~26500 ReportNo.:BLA-EMC-202009-A2102 Page 80 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] 3DH1_Ant1_2480_0~Reference 3DH1_Ant1_2480_30~1000 3DH1_Ant1_2480_1000~26500

ReportNo.:BLA-EMC-202009-A2102 Page 81 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] APPENDIXA:PHOTOGRAPHSOFTESTSETUP RadiatedSpuriousEmissions ReportNo.:BLA-EMC-202009-A2102 Page 82 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ConductedEmissionsatACPowerLine(150kHz-30MHz) ReportNo.:BLA-EMC-202009-A2102 Page 83 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] APPENDIXB:PHOTOGRAPHSOFEUT ReportNo.:BLA-EMC-202009-A2102 Page 84 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 85 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 86 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 87 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 88 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 89 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 90 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 91 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 92 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 93 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202009-A2102 Page 94 of 94 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] ----ENDOFREPORT---- Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthis reportreferonlytothesample(s)tested.WithoutwrittenapprovalofBlueAsia,thisreportcan’tbe reproducedexceptinfull.

Model No.: E90