2A5S9-FOCUSOUNDF1FOCUSOUND

Quick start The see-thru glass directional speaker Audfly Technology Co., Limited Contents Focusound glass speaker 3.5mm Audio Cable Stand Driver Power Adapter Vertical Placement 90° 90° Music Player 3.5mm Audio Cable 24V Adapter AC 220V Connection Mode Connection Mode Bluetooth Connection Mobilephone 24V Adapter AC 220V 3.5mm Audio Cable USB C 24V Adapter AC 220V Connection Mode Notebook or PC Description(Driver) Rhythm LEDSPower IndicatorAudio EN Volume Knob plug in properly before turn screw ring to lock down the connector and cable Pull this ring to unlock Power Switch DC24V IN USB C 3.5mm Aux In (L) Panel Connector (R) Panel Connector The Focusound parametric speaker array system uses ultrasound technol- ogy that can be harmful if not used appropriately. Exposure to ultrasound at high volumes or for prolonged periods of time can cause permanent hearing loss or other health issues. To minimize the risk of harm, we recommend the following precautions: Limit listening time to 30 minutes per day to avoid prolonged exposure Use the product at a comfortable volume level and never at a volume that causes discomfort or pain Keep the product away from infants, young children, and pets Do not use the product near electronic medical devices, such as pacemakers, as ultrasound can interfere with their operation Ensure that the product is properly grounded and connected to a safe electrical source Do not open the product casing, as there are high-voltage components inside the driver Do not attempt to repair the product yourself. If you experience any issues, contact our customer support team for assistance. By following these guidelines, you can reduce the risk of harm associated with ultrasound exposure and electrical hazards. If you have any questions or concerns about using the Focusound parametric speaker array system, please contact us for further assistance. WARNING: ULTRASOUND SAFETY AND ELECTRICAL HAZARDS ResultItem Product model Audible sound SPL Frequency range Total harmonic distortion Rated power Input port Radiation angle Power adapter Size Color DUO 75±3dB@1m 1KHz 500Hz-20KHz 10±5% 10±3W 15°±3°(-20dB) 3.5mm AUX IN Type-C Bluetooth 5.1 370.3*152*8.7mmSize of screen frame 200*81*23mm Size of drive Gray Input:100-240Vac 50/60Hz Output:24V DC/2A Technical Specifications (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 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. NOTE : Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. FCC STATEMENT This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: Complies with IMDA Standards DB123456 Dear customer! Thank you for purchasing the products of our company ! In order to protect your legitimate rights and improve the after-sales service of the customer,the warranty regulations are specially formulated, please read carefully and provide valuable comments and suggestions. Our company's products enjoy free warranty service for 12 months from the date of sale, if the product exceeds 12 months warranty period from the date of sale, our company will charge cost of parts as appropriate. If the repaired product which should be properly packed is damaged or lost in transit, our company will not be responsible for the loss. In the period of free warranty, If the following matters occur, our company has the right to refuse the service or collect materials and service fees as appropriate. 1.Product failure or damage caused by improper use of the user; 2.Worn parts; 3.Accident caused by electric shock or improper installation; 4.Damage caused by repair of non service personnel. To get warranty service, you can contact our customer service through our official website, or you can call 4001-581-281, thank you . WARRANTY REGULATIO Customer nameCustomer phone Customer address Maintenance record Product model: DUO Product date: Inspec�on date : Inspector: This product has passed the factory inspection! E-mail: [email protected] Add: Flat 9, 7/F, Fonda Industrial Building, 37-39 Au Pui Wan Street, Fotan, Shatin, NT, HK Web: www.focusound.com Audfly Technology MADE IN CHINA Audfly Technology Co., Limited

Audfly Technology(Suzhou) Co.,Ltd No.78,Keling Road,SND Software Park,New District, Suzhou,jiangsu,Suzhou, China Date: 2023-06-25 FederalCommunicationsCommission Authorizationand EvaluationDivision 7435 OaklandMills Road Columbia,MD 21046 Ref:AttestationStatementsPart 2.911(d)(5) (i) Filing SUBJECT:FCC Applicationfor FCC ID: 2A5S9-FOCUSOUNDF1 To WhomIt May Concern: AudflyTechnology(Suzhou)Co.,Ltdcertifiesthat the equipmentfor which authorizationis soughtis not “covered” equipmentprohibitedfrom receivingan equipmentauthorizationpursuantto section2.903 of the FCC rules. Sincerely, Signatory [Yang Li, Manager]

AudflyTechnology(Suzhou)Co.,Ltd No.78,KelingRoad,SNDSoftwarePark,NewDistrict,Suzhou,jiangsu,Suzhou,China Date:2023-06-25 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing SUBJECT:FCCApplicationforFCCID:2A5S9-FOCUSOUNDF1 ToWhomItMayConcern: AudflyTechnology(Suzhou)Co.,Ltdcertifiesthat,asofthedateofthefilingoftheapplication,theapplicantis notidentifiedontheCoveredListasanentityproducing“covered”equipment. Sincerely, Signatory [YangLi,Manager]

Audfly Technology(Suzhou) Co.,Ltd No.78,Keling Road,SND Software Park,New District, Suzhou,jiangsu,Suzhou, China Date: 2023-06-21 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2A5S9-FOCUSOUNDF1 Audfly Technology(Suzhou) Co.,Ltd certifies that, as of the date of the filing of the application, International Certification Solution Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Audfly Technology(Suzhou) Co.,Ltd accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. International Certification Solution Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name:International Certification Solution Inc. FRN: 0033923541 Address: 22060 Queen St. Castro Valley, CA 94546, USA Contact Person: Cheuck Wong Tel.:5108166730 Email:[email protected] Sincerely, Signed on behalf of Audfly Technology(Suzhou) Co.,Ltd Signed on behalf of International Certification Solution Inc. Name: Yang Li Name: Cheuck Wong Title: Manager Title: Business Associate Date: 2023-06-21 Date: 2023-06-21

AudflyTechnology(Suzhou)Co.,Ltd No.78,KelingRoad,SNDSoftwarePark,NewDistrict,Suzhou,jiangsu,Suzhou,China Date:2023-06-25 FEDERALCOMMUNICATIONSCOMMISSION AUTHORIZATIONANDEVALUATIONDIVISION 7435OAKLANDMILLSROAD COLUMBIA,MD21046 SUBJECT:FCCApplicationforFCCID:2A5S9-FOCUSOUNDF1 ConfidentialityRequest Towhomitmayconcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,wearerequestingthe Commissiontowithholdthefollowingattachment(s)asconfidentialdocumentsfrompublicdisclosureindefinitely. ☒ BlockDiagram ☐ Tune-UpInformation ☒ OperationalDescription ☐ SecurityInformation ☒ Schematics ☐ SoftwareDefinedRadio(SDR)Information ☐ PartsList Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedtothepublic.The publicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovideunjustifiedbenefitstoits competitors. Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulationsinTitle47CFR §2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthatbusinesssensitiveinformation remainsconfidentialuntiltheactualmarketingofnewlyauthorizeddevices,werequestShortTermConfidentiality ofthefollowingattachment(s); ☒ ExternalPhotos ☒ TestSetupPhotos ☒ InternalPhotos ☒ UserManual ☐For45days,pursuanttoPublicNoticeDA04-1705. or ☒For180dayspursuanttoKDB726920D01. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthisapplicationandall accompanyingdocumentationwillnotbemadebeforethedateoftheGrantforthisapplication. Sincerely, Signatory [YangLi,Manager]

AudflyTechnology(Suzhou)Co.,Ltd No.78,KelingRoad,SNDSoftwarePark,NewDistrict,Suzhou,jiangsu,Suzhou,China Date:2023-06-25 FEDERALCOMMUNICATIONSCOMMISSION AUTHORIZATIONANDEVALUATIONDIVISION 7435OAKLANDMILLSROAD COLUMBIA,MD21046 SUBJECT:FCCApplicationforFCCID:2A5S9-FOCUSOUNDF1 POWEROFATTORNEY ToWhomItMayConcern: We,theundersigned,herebyauthorizeWaltekTestingGroup(Shenzhen)Co.,Ltd.JandySoonourbehalf,to applytotheFederalCommunicationsCommissiononourequipment.AnyandallactscarriedoutbyWaltek TestingGroup(Shenzhen)Co.,Ltd.JandySoonourbehalfshallhavethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,AudflyTechnology(Suzhou) Co.,LtdarenotsubjecttoadenialoffederalbenefitspursuanttoSection5301oftheAnti-DrugActof1988,21 USC853a,andnopartytotheapplicationissubjecttoadenialoffederalbenefitspursuanttothatsection. Sincerely, Signatory [YangLi,Manager]

Reference No.: WTH23X05111527W Page 2 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS Model: DUO EUT View 1 EUT View 2 Reference No.: WTH23X05111527W Page 3 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTH23X05111527W Page 4 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTH23X05111527W Page 5 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7 EUT View 8 Reference No.: WTH23X05111527W Page 6 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Model: SOLO EUT View 1 EUT View 2 Reference No.: WTH23X05111527W Page 7 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTH23X05111527W Page 8 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTH23X05111527W Page 9 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7 EUT View 8 Reference No.: WTH23X05111527W Page 10 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 9

Reference No.: WTH23X05111527W Page 1 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTH23X05111527W Page 11 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS Model: DUO EUT Housing and Board View 1 EUT Housing and Board View 2 Reference No.: WTH23X05111527W Page 12 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 1 Solder Board-Component View 2 Reference No.: WTH23X05111527W Page 13 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 3 Solder Board-Component View 4 Reference No.: WTH23X05111527W Page 14 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 5 Solder Board-Component View 6 Reference No.: WTH23X05111527W Page 15 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 7 Solder Board-Component View 8 Reference No.: WTH23X05111527W Page 16 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Model: SOLO EUT Housing and Board View 1 EUT Housing and Board View 2 Reference No.: WTH23X05111527W Page 17 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 1 Solder Board-Component View 2 Reference No.: WTH23X05111527W Page 18 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 3 Solder Board-Component View 4 Reference No.: WTH23X05111527W Page 19 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 5 Solder Board-Component View 6 Reference No.: WTH23X05111527W Page 20 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 7 Solder Board-Component View 8 Reference No.: WTH23X05111527W Page 21 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 9 Solder Board-Component View 10 Reference No.: WTH23X05111527W Page 22 of 25 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 11 Antenna View

1. RF Exposure Requirements 1.1 General Information Client Information Applicant: Audfly Technology(Suzhou) Co.,Ltd Address of applicant: No.78,Keling Road,SND Software Park,New District, Suzhou,jiangsu, Suzhou, China Manufacturer: Audfly Technology Co., Limited Address of manufacturer: Flat 9, 7/F, Fonda Industrial Building, 37-39 Au Pui Wan Street, Fotan, Shatin, NT, HK General Description of EUT: Product Name: FOCUSOUND Trade Name Model No.: DUO Adding Model(s): SOLO Rated Voltage: DC 24V Battery Capacity: / Adapter Model: RYF909C240200VU INPUT:AC100~240V-50/60Hz O U T P UT:DC24.0V-2.0A FCC ID: 2A5S9-FOCUSOUNDF1 Equipment Type: Mobile device Technical Characteristics of EUT: Bluetooth(BR/EDR mode) Bluetooth Version: V5.1 (BR/EDR mode) Frequency Range: 2402-2480MHz RF Output Power: -13.49dBm (Conducted) Data Rate: 1Mbps, 2Mbps, 3Mbps Modulation: GFSK, π/4 DQPSK, 8DPSK Quantity of Channels: 79 Channel Separation: 1MHz Type of Antenna: FPC Antenna Antenna Gain: -21.49dBi Bluetooth(BLE mode) Bluetooth Version: V5.1 (BLE mode) Frequency Range: 2402-2480MHz RF Output Power: -9.14dBm (Conducted) Data Rate: 1Mbps Modulation: GFSK Quantity of Channels: 40 Channel Separation: 2MHz Type of Antenna: FPC Antenna Antenna Gain: -21.49dBi 1.2 RF Exposure Exemption According to §1.1307(b)(3) and KDB 447498 D04 Interim General RF Exposure Guidance v01, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. Option A: FCC Rule Part 1.1307 (b)(3)(i)(A):The available maximum time-averaged power is no more than 1mW, regardless of separation distance. Option B: FCC Rule Part 1.1307 (b)(3)(i)(B): The available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold P th (mW) described in the following formula. P th is given by: Option C: FCC Rule Part 1.1307 (b)(3)(i)(C): The minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. R must be at least λ/2π, where λ is the free-space operating wavelength in meters. Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 1.34-30 3,450 R 2 /f 2 30-300 3.83 R 2 300-1,500 0.0128 R 2 f 1,500-100,000 19.2R 2 For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) In the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. 1.3 Calculated Result Radio Access Technology Prediction Frequency Output Power Antenna Gain Duty Cycle Tune-Up Time-Averaged Power ERP (MHz) (dBm) (dBi) (%) (dBm) (dBm) Bluetooth 2402 -9.14 -21.49 100 -9.00 -32.64 Frequency Option Min. Distance Max. Power Exposure Limit Ratio Result (MHz) (cm) (dBm) (mW) (mW) Pass/Fail 2402 C 20.00 -32.64 0.00 768.00 0.01 Pass Note: 1. Time-Averaged Power=Output Power * Duty Cycle; ERP= Time-Averaged Power+ Antenna gain-2.15dB 2. Option A, B and C refers as clause 1.2. 3. For option B, Max (time-averaged power, effective radiated power (ERP)) converts to Max. Power. For option C, ERP converts to Max. Power; 4. For option B, P th (mW) converts to Exposure Limit (mW); For option C, ERP (W) converts to Exposure Limit (mW). 5. Ratio= Tune-Up ERP (mW)/ Exposure Limit (mW) Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail -- -- -- -- -- -- Result: Pass

ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page1of10 TestingReport CustomerName:AudflyTechnologyCo.,Limited ProductName:BTAntenna SampleModel:SOLO ReferenceStandard:GB/T9410-2008;ANSI/IEEEStd149-2021 IssueDate:2023.6.21 Engineer:Date: Auditor:Date: Approver:Date: ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page2of10 Version VersionNo.DateDescriptionFormulateApproval A02023.06.21Forthefirsttime,formulateZkrisEason Contents 1.GeneralInformation.........................................................................................................................3 1.1Generalinformationoftestinginstitutions...........................................................................3 1.2Testingprinciple...................................................................................................................3 1.3Testequipment......................................................................................................................4 1.4Testenvironment...................................................................................................................4 1.5Statement..............................................................................................................................4 2.SampleInformation.........................................................................................................................5 2.1Clientinformation.................................................................................................................5 2.2DescriptionofEUT(S)..........................................................................................................5 2.3EUTappearance....................................................................................................................6 2.4EUTsetupphotooffreespaceOTAtesting.........................................................................6 3.TestResults.....................................................................................................................................7 3.1Teststandard.........................................................................................................................7 3.2Testuncertainty.....................................................................................................................7 3.3Testdata................................................................................................................................8 3.3.1VSWRparameters.....................................................................................................8 3.3.2VSWRdata................................................................................................................8 3.3.3Typicalfreespaceefficiencyandgain......................................................................8 3.3.4Typicalfreespaceradiationpattern...........................................................................9 （Thefollowingisblank）..............................................................................................................10 ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page3of10 1.GeneralInformation 1.1Generalinformationoftestinginstitutions Name ShenzhenRFI-LABCommunicationTechnologyCo.,Ltd. Address 10/FA,LingyunBld,LiufangRd,BaoanDistrict,SZ Tel / E-mail / Equipment AlltheequipmentusedinthereportisfixedinZoneB,WestSideof1/F,Building1, TingweiIndustrialPark,No.6LiufangRoad,Bao'anDistrict,Shenzhen 1.2Testingprinciple ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page4of10 1.3Testequipment EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date OTATest System RayZone-5000 RFI-LAB-RF -D00 GTS2023.3.142025.3.13 Network Analyzer E5071C RFI-LAB-RF -D01 KEYSIGHT2023.5.112024.5.10 Network Analyzer E5071C RFI-LAB-RF -C02 KEYSIGHT2023.5.112024.5.10 1.4Testenvironment Temperature 23.3°C Humidity 59%RH Pressure 100.19kPa 1.5Statement (1)Thetestresultsinthereportareonlyapplicabletothetestedsamplesandthetestedsamples workundertheenvironmentdescribedinthereport. (2)OnlyShenzhenRFI-LABCommunicationTechnologyCo.,Ltd.havetherighttomodifythe report,andthemodificationinformationshallbeannotatedintherevisionform. (3)Anyobjectiontothisreportshallberaisedwithin30daysafterformalconfirmationofthe report. (4)Thisreportisinvalidifthereisanyevidencethatthesampleinformationprovidedisfalsified. (5)Thereportisinvalidwithoutthesignatureoftheauditorandapprover. ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page5of10 2.SampleInformation 2.1Clientinformation Name AudflyTechnologyCo.,Limited Address Flat9,7/F,FondaIndustrialBuilding,37-39AuPuiWanStreet,Fotan, Shatin,NT,HK Contacts / Tel / E-mail / Manufacturer / 2.2DescriptionofEUT(S) ProductName BTAntenna SampleModel SOLO AntennaSize / SerialNo. / AntennaType FPCAntenna TestItem VSWR;Antennagain;Efficiency;Radiationpattern FrequencyRange 2400-2500MHz ReceivedDate 2023.06.16 TestDate 2023.06.20 Remark / ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page6of10 2.3EUTappearance 2.4EUTsetupphotooffreespaceOTAtesting Planform Frontview ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page7of10 3.TestResults 3.1Teststandard NameParameterMethodStandardno. Mobile communication antenna Antennagain Genericspecification forantennasusedinthe mobilecommunications GB/T 9410-2008 Radiationpattern VSWR Antenna Radiationefficiency IEEEStandardTest ProceduresforAntennas ANSI/IEEEStd 149-2021 Gainanddirectivity 3.2Testuncertainty TheuncertaintywascalculatedonthebasisoftheGUMpublishedbyISO,usingthe inclusionfactorofK=2andthe95%confidenceleveltoexpresstheextended uncertainty. ItemUncertainty VSWR±0.3 Antennagain±0.72dB Radiationefficiency±0.72dB ReportNo.:RFI-LAB-RF-202306-FF24 QP030-E41 Page8of10 3.3Testdata 3.3.1VSWRparameters 3.3.2VSWRdata 3.3.3Typicalfreespaceefficiencyandgain Frequency/MHz 240024502500 VSWR 12.42810.8849.7660 Frequency/MHz 24002410242024302440245024602470248024902500 PeakGain/dBi -21.49-21.70-22.41-22.35-21.99-21.96-21.62-21.95-21.93-21.45-21.52 Efficiency/% 0.250.250.240.230.220.220.220.…

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Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 63 TEST REPORT Reference No. .................... : WTH23X05111527W001 FCC ID ................................ : 2A5S9-FOCUSOUNDF1 Applicant ........................... : Audfly Technology(Suzhou) Co.,Ltd Address.............................. : No.78,Keling Road,SND Software Park,New District, Suzhou,jiangsu, Suzhou, China Manufacturer ..................... : Audfly Technology Co., Limited Address.............................. : Flat 9, 7/F, Fonda Industrial Building, 37-39 Au Pui Wan Street, Fotan, Shatin, NT, HK Product Name ................... : FOCUSOUND Model No... ......................... : DUO Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : 2023-05-23 Date of Test........................ : 2023-05-23 to 2023-06-21 Date of Issue ..................... : 2023-06-21 Test Report Form No. ....... : WTX_Part 15_247W Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Gala Wang Silin Chen Reference No.: WTH23X05111527W001 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 63 TABLE OF CONTENTS 1. GENERAL INFORMATION ....................................................................................................................................5 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .........................................................................5 1.2 TEST STANDARDS .................................................................................................................................................6 1.3 TEST METHODOLOGY ...........................................................................................................................................6 1.4 TEST FACILITY ......................................................................................................................................................6 1.5 EUT SETUP AND TEST MODE ..............................................................................................................................7 1.6 MEASUREMENT UNCERTAINTY .............................................................................................................................9 1.7 TEST EQUIPMENT LIST AND DETAILS ................................................................................................................. 10 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 12 3. ANTENNA REQUIREMENT ................................................................................................................................. 13 3.1 STANDARD APPLICABLE ..................................................................................................................................... 13 3.2 EVALUATION INFORMATION ................................................................................................................................ 13 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS .................................................................................... 14 4.1 STANDARD APPLICABLE ..................................................................................................................................... 14 4.2 FREQUENCY HOPPING SYSTEM ......................................................................................................................... 14 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................... 15 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION .................................................... 16 5.1 STANDARD APPLICABLE ..................................................................................................................................... 16 5.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 16 5.3 TEST PROCEDURE .............................................................................................................................................. 16 5.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 17 6. DWELL TIME OF HOPPING CHANNEL ........................................................................................................... 18 6.1 STANDARD A…

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