2AZ8Z-DS10SPERO 10

Annex A External Photos Test Model No.: DS10 Page 1 of 3 Test Model No.: DS10 Page 2 of 3 Test Model No.: DS10 Page 3 of 3

LABEL: Ca. 50mm x 80mm Label Location

Annex B Internal Photo Test Model No.: DS10 Page 1 of 19 Test Model No.: DS10 Page 2 of 19 Test Model No.: DS10 Page 3 of 19 Antenna Test Model No.: DS10 Page 4 of 19 Test Model No.: DS10 Page 5 of 19 Test Model No.: DS10 Page 6 of 19 Test Model No.: DS10 Page 7 of 19 Test Model No.: DS10 Page 8 of 19 Test Model No.: DS10 Page 9 of 19 Test Model No.: DS10 Page 10 of 19 Test Model No.: DS10 Page 11 of 19 Test Model No.: DS10 Page 12 of 19 Test Model No.: DS10 Page 13 of 19 Test Model No.: DS10 Page 14 of 19 Test Model No.: DS10 Page 15 of 19 Test Model No.: DS10 Page 16 of 19 Test Model No.: DS10 Page 17 of 19 Test Model No.: DS10 Page 18 of 19 Test Model No.: DS10 Page 19 of 19

FCC RF Exposure EUT Description: SPERO 10 Model No.: DS10 FCC ID: 2AZ8Z-DS10 1. Limits According to KDB 447498 D04 General RF Exposure Guidance v01 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separati on distance mm ResultLimit SAR Test Exclusion EDR 2.34 2±1(3) 1.995 5 0.6283.0 Pass BLE 2.24 2±1(3) 1.995 5 0.6283.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2305051734-1E/2E, antenna gain=3.3dBi Per KDB 447498 D04, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.628 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 52 Report No.: HK2305051734-1E FCC Test Report FCC PART 15 SUBPART C 15.247 Test report On Behalf of DUOMONDI INTERNATIONAL DEVELOPMENT CO., LIMITED For SPERO 10 Model No.: DS10 FCC ID: 2AZ8Z-DS10 Prepared For : DUOMONDI INTERNATIONAL DEVELOPMENT CO., LIMITED C1, C2&C6 17/F, ROXY INDUSTRIAL CENTRE 58-66 TAI LIN PAI RD, KWAI CHUNG NT, Hong Kong Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: May. 05, 2023 ~ Jun. 25, 2023 Date of Report: Jun. 25, 2023 Report Number: HK2305051734-1E Page 2 of 52 Report No.: HK2305051734-1E Test Result Certification Applicant’s name ....... DUOMONDI INTERNATIONAL DEVELOPMENT CO., LIMITED Address ....................... . C1, C2&C6 17/F, ROXY INDUSTRIAL CENTRE 58-66 TAI LIN PAI RD, KWAI CHUNG NT, Hong Kong Manufacture's Name . . DUOMONDI INTERNATIONAL DEVELOPMENT CO., LIMITED Address ........................ C1, C2&C6 17/F, ROXY INDUSTRIAL CENTRE 58-66 TAI LIN PAI RD, KWAI CHUNG NT, Hong Kong Product description Trade Mark: DUOMONDI Product name ................ SPERO 10 Model and/or type reference ................... . DS10 Standards ................... . 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ................................. . Date (s) of performance of tests ... . May. 05, 2023 ~ Jun. 25, 2023 Date of Issue ................................. Jun. 25, 2023 Test Result ..................................... Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 52 Report No.: HK2305051734-1E Table of Contents Page 1. Summary ........................................................................................................................................................ 5 1.1. Test Standards ......................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................... 5 1.3. Information of the Test Laboratory ........................................................................................................... 6 1.4. Statement of the Measurement Uncertainty ............................................................................................ 6 2. General Information ....................................................................................................................................... 7 2.1. Environmental Conditions ........................................................................................................................ 7 2.2. General Description of EUT ..................................................................................................................... 7 2.3. Description of Test Modes and Test Frequency ....................................................................................... 8 2.4. Equipments Used During the Test ........................................................................................................... 9 2.5. Related Submittal(S) / Grant (S) .............................................................................................................. 9 2.6. Modifications ............................................................................................................................................ 9 2.7. Description of Test Setup ....................................................................................................................... 10 3. Test Conditions and Results ...................................................................................................................... 11 3.1. Conducted Emissions Test .................................................................................................................... 11 3.2. Radiated Emissions and Band Edge ..................................................................................................... 14 3.3. Maximum Peak Conducted Output Power ............................................................................................ 25 3.4. 20db Bandwidth ..................................................................................................................................... 26 3.5. Frequency Separation ........................................................................................................................... 30 3.6. Number of Hopping Frequency ............................................................................................................. 32 3.7. Time of Occupancy (Dwell Time) ........................................................................................................... 34 3.8. Out-of-Band Emissions .......................................................................................................................... 38 3.9. Pseudorandom Frequency Hopping Sequence .................................................................................... 48 3.10. Antenna Requirement ............................................................................................................................ 49 4. Test Setup Photos of the EUT .................................................................................................................... 50 5. Photos of the EUT .........................................................................................…

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Page 34 of 52 Report No.: HK2305051734-1E 3.7. Time of Occupancy (Dwell Time) Limit 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. Test Procedure The transmitter output was connected to the spectrum analyzer through an attenuator. Set center frequency of spectrum analyzer=operating frequency with 1MHz RBW and 3MHz VBW, Span 0Hz. Test Configuration EUT SPECTRUM ANALYZER Test Results Modulation Packet Pulse time (ms) Dwell time (second) Limit (second) Result GFSK DH1 0.41 0.131 0.40 PASS DH3 1.67 0.267 DH5 2.92 0.311 π/4DQPSK 2-DH1 0.41 0.131 0.40 PASS 2-DH3 1.67 0.267 2-DH5 2.92 0.311 8DPSK 3-DH1 0.39 0.125 0.40 PASS 3-DH3 1.67 0.267 3-DH5 2.92 0.311 Note: 1. We have tested all mode at high, middle and low channel, and recoreded worst case at middle channel. 2. Dwell time=Pulse time (ms) × (1600 ÷ 2 ÷ 79) ×31.6 Second for DH1, 2-DH1, 3-DH1 Dwell time=Pulse time (ms) × (1600 ÷ 4 ÷ 79) ×31.6 Second for DH3, 2-DH3, 3-DH3 Dwell time=Pulse time (ms) × (1600 ÷ 6 ÷ 79) ×31.6 Second for DH5, 2-DH5, 3-DH5 Test plot as follows: Page 35 of 52 Report No.: HK2305051734-1E GFSK Modulation DH1 DH3 DH5 Page 36 of 52 Report No.: HK2305051734-1E π/4DQPSK Modulation 2-DH1 2-DH3 2-DH5 Page 37 of 52 Report No.: HK2305051734-1E 8DPSK Modulation 3-DH1 3-DH3 3-DH5 Page 38 of 52 Report No.: HK2305051734-1E 3.8. Out-of-Band Emissions Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF con-ducted or a radiated measurement, pro-vided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter com-plies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated device is operating, the RF power that is produced shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided that the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of root-mean-square averaging over a time interval, as permitted under Section 5.4(4), the attenuation required shall be 30 dB instead of 20 dB. Attenuation below the general field strength limits specified in RSS-Gen is not required. Test Procedure Connect the transmitter output to spectrum analyzer using a low loss RF cable, and set the spectrum analyzer to RBW=100 kHz, VBW= 300 kHz, peak detector , and max hold. Measurements utilizing these setting are made of the in-band reference level, band edge and out-of-band emissions. Test Configuration EUT SPECTRUM ANALYZER Test Results Remark: The measurement frequency range is from 30MHz to the 10th harmonic of the fundamental frequency. The lowest, middle and highest channels are tested to verify the spurious emissions and bandage measurement data. We measured all conditions (DH1, DH3, DH5) and recorded worst case at DH5, 2DH5 and 3DH5. Test plot as follows: Page 39 of 52 Report No.: HK2305051734-1E GFSK CH00 CH39 Page 40 of 52 Report No.: HK2305051734-1E CH78 Page 41 of 52 Report No.: HK2305051734-1E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 42 of 52 Report No.: HK2305051734-1E π/4DQPSK CH00 CH39 Page 43 of 52 Report No.: HK2305051734-1E CH78 Page 44 of 52 Report No.: HK2305051734-1E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 45 of 52 Report No.: HK2305051734-1E 8DPSK CH00 CH39 Page 46 of 52 Report No.: HK2305051734-1E CH78 Page 47 of 52 Report No.: HK2305051734-1E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 48 of 52 Report No.: HK2305051734-1E 3.9. Pseudorandom Frequency Hopping Sequence TEST APPLICABLE For 47 CFR Part 15C section 15.247 (a) (1): Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hop-ping 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 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hop-ping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5 th and 9 th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones, for example: the shift register is initialized with nine ones. ● Number of shift register stages:9 ● Length of pseudo-random sequence:29…

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1 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna ApplicationReport SWRU120D–April2007–RevisedJanuary2019 2.4-GHzInvertedF Antenna ABSTRACT Thisdocumentdescribesa printed-circuitboard(PCB)antennadesignthat can be usedwith all 2.4-GHz transceiversand transmittersfromTexasInstruments™. The maximumgainwhenusedon the reference boardis measuredto be +3.3dBi, and the overallsize requirementsfor this antennaare 25.7× 7.5 mm (not includinggroundplane). Contents 1Descriptionof the antennaDesign........................................................................................2 2MeasurementResults.......................................................................................................3 2.1RadiationPattern...................................................................................................3 2.2Reflection...........................................................................................................10 2.3Bandwidth..........................................................................................................11 3Conclusion..................................................................................................................11 4References..................................................................................................................11 Trademarks TexasInstrumentsis a trademarkof TexasInstruments. All othertrademarksare the propertyof theirrespectiveowners. Descriptionof the antennaDesignwww.ti.com 2 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna 1Descriptionof the antennaDesign It is importantto makean exactcopyof the antennadimensionsto obtainoptimumperformance.The easiestapproachto implementthe antennain a PCBCADtool is to importthe antennalayoutfroma gerberfile or a DXFfile. Suchfiles are includedin CC2430DBreferencedesign[1]. The gerberfile is calledInverted_F_Antenna.spland the DXFfile is calledInverted_F_Antenna.dxf.If the antennais implementedon a PCBthat is widerthanthe antenna,avoidplacingcomponentsor havinga ground planecloseto the end pointsof the antenna.If the CADtool beinguseddoesnot supportimportinggerber or DXFfiles,see Figure1 and Table1. The antennaimpedanceis tunedto 50 ohmon the referenceboard.The impedancewill howeverbe affectedby differentsize and shapeof the groundplane,objectsin the antennanearfieldsuchas mechanicalassemblies(housing,batteries,etc.),PCBthickness,PCBmaterialand so on. It is therefore recommendedto add a pi-networkcloseto the antennafeedpointfor impedancematching. The resultspresentedin this documentare basedon an antennaimplementedon a PCBwith a 1-mm thicknessusingstandardFR-4material. Figure1. IFA Dimensions Table1. IFA Dimensions H15.70mmW20.46mm H20.74mmL125.58mm H31.29mmL216.40mm H42.21mmL32.18mm H50.66mmL44.80mm H61.21mmL51.00mm H70.80mmL61.00mm H81.80mmL73.20mm H90.61mmL80.45mm W11.21mm www.ti.comMeasurementResults 3 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna 2MeasurementResults All of the resultspresentedin this sectionare basedon measurementsperformedwith the CC2430DB[1] evaluationboard. 2.1RadiationPattern Figure2 showshow to relateall of the radiationpatternsto the orientationof the antenna.The radiation patternsweremeasuredwith the CC2430deviceprogrammedto 0-dBmoutputpower. Figure2. RelatingAntennato RadiationPatterns MeasurementResultswww.ti.com 4 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure3 showsthe XY planeverticalpolarization. Figure3. XY Plane–VerticalPolarization www.ti.comMeasurementResults 5 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure4 showsthe XY planehorizontalpolarization. Figure4. XY Plane–HorizontalPolarization MeasurementResultswww.ti.com 6 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure5 showsthe XZ planeverticalpolarization. Figure5. XZ Plane–VerticalPolarization www.ti.comMeasurementResults 7 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure6 showsthe XZ planehorizontalpolarization. Figure6. XZ Plane–HorizontalPolarization MeasurementResultswww.ti.com 8 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure7 showsthe YZ planeverticalpolarization. Figure7. YZ Plane–VerticalPolarization www.ti.comMeasurementResults 9 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna Figure8 showsthe YZ planehorizontalpolarization. Figure8. YZ Plane–HorizontalPolarization MeasurementResultswww.ti.com 10 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna 2.2Reflection Figure9 showsthat the IFA ensuresless than10%reflectionof the availablepowerfor a bandwidthof morethan300 MHz.A largebandwidthmakesthe antennaless sensitiveto detuningbecauseof plastic encapsulationor otherobjectsin the vicinityof the antenna. Figure9. MeasuredReflectionat FeedPointof Antenna www.ti.comMeasurementResults 11 SWRU120D–April2007–RevisedJanuary2019 SubmitDocumentationFeedback Copyright© 2007–2019,TexasInstrumentsIncorporated 2.4-GHzInvertedF Antenna 2.3Bandwidth Anotherway of measuringthe bandwidthafterthe antennais implementedon a PCBand connectedto a transmitteris to writetest softwarethat stepsa carrieracrossthe frequencybandof interest.By usingthe …

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Radiated Emissions Conducted Emission