2AZXT-W1Active Noise Cancelling true wireless earbuds

FCC Caution： 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, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

ShenZhen Houshuxia Technology Co., LTD 2024.08.22 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for FCC ID: 2AZXT-W1 [ShenZhen Houshuxia 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. Sincerely, (Applicant signature) (Applicant printed name) Xin Xie ShenZhen Houshuxia Technology Co., LTD 2024.08.22 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for FCC ID: 2AZXT-W1 [ShenZhen Houshuxia 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. Sincerely, (Applicant signature) (Applicant printed name) Xin Xie

ShenZhen Houshuxia Technology Co., LTD 2024.08.22 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Xin Xie /Manager Contact information / address: Rm203, 2nd Floor, Building C,Youth Pioneer Park, Jianshe East Road, TSinghua Community, Longhua Street, Longhua District, Shenzhen, P. R. China EUT Name: Active Noise Cancelling true wireless earbuds Trademark: MODEL : W1 W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14, W15, W16, W17, W18, W19, W20, W21, W22, W23, W24, W25, W26, W27, W28, W29, W30 FCC ID: 2AZXT-W1

ShenZhen Houshuxia Technology Co., LTD 2024.08.22 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Xin Xie /Manager Contact information / address: Rm203, 2nd Floor, Building C,Youth Pioneer Park, Jianshe East Road, TSinghua Community, Longhua Street, Longhua District, Shenzhen, P. R. China

ShenZhen Houshuxia Technology Co., LTD Model Difference 2024.08.22 All the model are the same circuit and RF module, except appearance color and model name. Regards Sincerely Client’s signature: Client’s name / title : Xin Xie /Manager Contact information / address: Rm203, 2nd Floor, Building C,Youth Pioneer Park, Jianshe East Road, TSinghua Community, Longhua Street, Longhua District, Shenzhen, P. R. China EUT Name: Active Noise Cancelling true wireless earbuds Trademark: MODEL : W1 W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14, W15, W16, W17, W18, W19, W20, W21, W22, W23, W24, W25, W26, W27, W28, W29, W30 FCC ID: 2AZXT-W1

External Photos

Size:10*5mm FCC ID: 2AZXT-W1 Label location Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID:2AZXT-W1 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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 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. BT GFSK 2402 0.97 21 GFSK 2441 0.9 21 GFSK 2480 -0.08 21 π/ 4 DQPSK 2402 1.75 21 π/ 4 DQPSK 2441 1.6 21 π/ 4 DQPSK 2480 0.59 21 8DPSK 2402 2.29 21 8DPSK 2441 2.13 21 8DPSK 2480 1.12 21 max possible output power (PK,conducted)：3±1dBm 2.78dBi logarithmic terms convert to numeric result is nearly 1.90 4dBm=2.51mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.51/5*√2.402=0.78≤3.0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.51/5*√2.441=0.78≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=2.51/5*√2.48=0.79≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

SymbolsLWTA Dimensions 1.60±0.200.80±0.200.80±0.200.30±0.10 NumberTerminalName ① INPUT ② NC Dimensions(Unit: mm) w ①② ( Side View) ( Bottom View) ( Top View) A T L Shenzhen HanyangAntenna Design Co. Ltd. 1.Bluetooth 2.Dual-band WLAN 3.ISM and UWB 1.Surfacemountedelementwithasmalldimensionof1.6×0.8×0.8mmmeetfutureminiaturizationtrend. 2.EmbeddedandLTCC(lowtemperatureco-firedceramic)technologyisabletointegratewithsystemdesign aswellasbeatifyingthehousingoffinalproduct. 3.Miniaturization,wideband,highstability,lowESR,andlowtolerance. 4.Dual-bandresonancesinthedominantandharmonicmodesenablesmultibandoperations. 5.Novelground-radiationtechniqueenablesradiationfromboththeantennaandthegroundplane. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 Features: Applications: RF chip ANT chipANT pattern PCB ground Mode-2 Mode-1 P/N: HY160808 SRF09 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page1 Layout-1 (3.5mm×6.5mm) ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page2 1.5 1 3.5 2.5 0201 footprint (E1) 0201 footprint (E2) 0603 footprint (ANT) RF Input/Output 6.5 0.5 0.5 0.5 1.5 3.5 2.5 0201 footprint (E3) 6.5 Top layer: Bottom layer: 0.5 0.5 RF chip E1 E3 E2 ANT Equivalentcircuit: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 2.5 0201 footprint 0603 footprint 10 0.5 1.5 0201 footprint 1.5 3 2.5 10 1.5 2 0.5 0201 footprint Layout-2 (1.5mm×10mm) Top layer: Bottom layer: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page3 RF Input/Output ElectricalCharacteristics: CharacteristicCurves: FeatureSpecification 1 Centralfrequency2.45GHz 2 Bandwidth>150MHz 3 Peak gain2.78dBi 4 VSWR<2 5 PolarizationLinear 6 AzimuthbeamwidthOmnidirectional 7 Impedance50Ω P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page5 RadiationPattern: Y-ZPlaneX-ZPlane coordinates： 深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page5 RadiationPerformance: P/N: HY160808 SRF07, HY160808 SRF08,HY160808 SRF09 深圳汉阳天线设计有限公司 Shenzhen Hanyang Antenna Design Co. Ltd. X-YPlane Frequency 2400MHz2450MHz2500MHz Avg.gain-1.92-1.35-1.56 Peakgain1.792.782.66 Efficiency74.5580.2576.98 Temperature：40±2°C Humidity：90~95%RH Duration：500h Recovery conditions：Room temperature Recovery Time：24h (Class1) or 48h (Class2) Test Temperature Operating Temperature Temperature RelativeHumidity 25°C±5°C -25°C~+125°C 5~40°C 20~70% Notenoughsolder Weak holding forcemay cause bad connection between the chipandPCB. RecommendedSolderingAmounts The optimal solder fillet amounts forre-flowsoldering 天线厚度 以下 The optimal solder fillet amounts for wavesoldering DependabilityTest Too much solder Cracks tend to occur due to large stress. MoistureProof OptimumSolderAmount forReflowSoldering Solderability At least 95% of the terminal electrode is covered by newsolder. Preheating conditions:80 to 120°C;10~30s. Solder Tem p e r at u r e :2 3 5 ±5°CDuration:2 ±0.5s , Solder Tempe r ature:24 5±5°CDu rat ion:2±0.5s P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page6 10±1S AppliedForce:5NDuration:10±1S Preheating conditions: up-category temperature, 1h Recovery time:24±1h InitialMeasurement Cycling Times: 5 times, 1 cycle, 4steps: Preheating80to120°C;10~30s.SolderTemperature:235±5°C;Duration:2±0.5s;SolderTemperature:245±5°C Duration:2±0.5s;Preheating100to200°C;10±2min. SolderTemperature:265±5°C;Duration:10±1s Cleanthecapacitorwithsolventandexamineitwitha10X(min.)microscope. RecoveryTime:24±2h Recoverycondition:Roomtemperature Test Board: Al 2 O 3 orPCBWarp:1mm Speed:0.5mm/sec. Unit:mm Themeasurementshouldbemadewiththeboardinthe bendingposition. Resistance to Soldering Heat ResistancetoFlexureofSubstrate Temperature CycleTest P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page7 StageTemperatur…

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No.：BCTC/RF-EMC-005 Page: 1 of 84 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2407164311E Applicant: ShenZhen Houshuxia Technology Co., LTD Product Name: Active Noise Cancelling true wireless earbuds Test Model: W1 Tested Date: 2024-07-15 to 2024-07-24 Issued Date: 2024-07-24 Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 2 of 84 Edition：B.2 FCC ID:2AZXT-W1 The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: Active Noise Cancelling true wireless earbuds Trademark: Model/Type Reference: W1 W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14, W15, W16, W17, W18, W19, W20, W21, W22, W23, W24, W25, W26, W27, W28, W29, W30 Prepared For: ShenZhen Houshuxia Technology Co., LTD Address: Rm203, 2nd Floor, Building C,Youth Pioneer Park, Jianshe East Road, TSinghua Community, Longhua Street, Longhua District, Shenzhen, P. R. China Manufacturer: ShenZhen Houshuxia Technology Co., LTD Address: Rm203, 2nd Floor, Building C,Youth Pioneer Park, Jianshe East Road, TSinghua Community, Longhua Street, Longhua District, Shenzhen, P. R. China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-07-15 Sample tested Date: 2024-07-15 to 2024-07-24 Issue Date: 2024-07-24 Report No.: BCTC2407164311E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Tang Changyu/ Project Handler Zero Zhou/Reviewer Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 3 of 84 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 8 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test procedure .................................................................................................... 24 8.4 EUT operating Conditions ................................................................................... 24 8.5 Test Result .......................................................................................................... 25 9. Spurious RF Conducted Emissions ..................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit ......................................................................…

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Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 57 of 84 Edition：B.2 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 58 of 84 Edition：B.2 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 59 of 84 Edition：B.2 Power NVNT 3-DH1 2480MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 60 of 84 Edition：B.2 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 12.4 Test Result Temperature: 26°C Relative Humidity: 54% Test Voltage: DC 3.7V Remark: N/A Condition Mode Hopping Freq1 (MHz) Hopping Freq2 (MHz) HFS (MHz) Limit (MHz) Verdict NVNT 1-DH1 2401.788 2402.788 1 0.573 Pass NVNT 1-DH1 2440.788 2441.786 0.998 0.585 Pass NVNT 1-DH1 2478.786 2479.786 1 0.613 Pass NVNT 2-DH1 2401.786 2402.786 1 0.819 Pass NVNT 2-DH1 2440.786 2441.786 1 0.818 Pass NVNT 2-DH1 2478.786 2479.786 1 0.844 Pass NVNT 3-DH1 2401.944 2402.944 1 0.805 Pass NVNT 3-DH1 2440.946 2441.944 0.998 0.809 Pass NVNT 3-DH1 2478.944 2479.944 1 0.806 Pass Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 61 of 84 Edition：B.2 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 62 of 84 Edition：B.2 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 63 of 84 Edition：B.2 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 64 of 84 Edition：B.2 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 65 of 84 Edition：B.2 CFS NVNT 3-DH1 2480MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 66 of 84 Edition：B.2 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; 13.4 Test Result Temperature: 26°C Relative Humidity: 54% Test Voltage: DC 3.7V Remark: N/A Condition Mode Hopping Number Limit Verdict NVNT 1-DH1 79 15 Pass NVNT 2-DH1 79 15 Pass NVNT 3-DH1 79 15 Pass Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 67 of 84 Edition：B.2 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 68 of 84 Edition：B.2 Hopping No. NVNT 3-DH1 2441MHz Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 69 of 84 Edition：B.2 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation. The limit is specified in one of the subparagraphs of this Section. Submit this plot(s). Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 70 of 84 Edition：B.2 14.4 Test Result Temperature: 26°C Relative Humidity: 54% Test Voltage: DC 3.7V Remark: N/A Condition Mode Frequency (MHz) Pulse Time (ms) Total Dwell Time (ms) Burst Count Period Time (ms) Limit (ms) Verdict NVNT 1-DH1 2441 0.382 119.948 314 31600 400 Pass NVNT 1-DH3 2441 1.639 258.962 158 31600 400 Pass NVNT 1-DH5 2441 2.887 326.231 113 31600 400 Pass NVNT 2-DH1 2441 0.392 123.48 315 31600 400 Pass NVNT 2-DH3 2441 1.643 264.523 161 31600 400 Pass NVNT 2-DH5 2441 2.892 294.984 102 31600 400 Pass NVNT 3-DH1 2441 0.392 124.264 317 31600 400 Pass NVNT 3-DH3 2441 1.642 252.868 154 31600 400 Pass NVNT 3-DH5 2441 2.894 300.976 104 31600 400 Pass Note: Total Dwell Time (ms) = Pulse Time (ms)*Burst Count Report No.:BCTC2407164311E No.：BCTC/RF-EMC-005 Page: 71 of 84 Edition：B.2 Test Graphs Dwell NVNT 1-DH1 2441MHz One Burst Dwell NVNT 1-DH1 2441MHz Accumulated Report No.:BCTC2407164311E No.：BCT…

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