2BUUT-A2500Aroma Diffuser

GuangzhouXiangyunFlavorTechnologyCo.,Ltd. Address：302,B2Building,No.7MinyingDadaoxi,XintangTown,Zengcheng District,Guangzhou,Guangdong,China FRN:0037992187 Date:2026-04-02 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(7)Filing SUBJECT:FCCApplicationforFCCID:2BUUT-A2500 GuangzhouXiangyunFlavorTechnologyCo.,Ltd.certifiesthat,asofthedateofthefilingof theapplication,XINNAISIINCisourdesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID.GuangzhouXiangyunFlavorTechnologyCo.,Ltd.acceptsto maintainanagentfornolessthanoneyearafterthegranteehasterminatedallmarketing andimportationortheconclusionofanyCommission-relatedproceedinginvolvingthe equipment. XINNAISIINCaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:XINNAISIINC Address:1500NGRANTSTSTER,DENVER,CO80203 FRN:0037518289 ContactPerson:KiKi Tel.:+01(951)893-3011 Email:[email protected] Sincerely, SignedonbehalfofGuangzhouXiangyun FlavorTechnologyCo.,Ltd. SignedonbehalfofXINNAISIINC Name: Name: Title:ManagerTitle:Manager Date:2026-04-02Date:2026-04-02

Rev9/15/2025 GuangzhouXiangyunFlavorTechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Apr.02,2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BUUT-A2500 GuangzhouXiangyunFlavorTechnologyCo.,Ltd.certifiesthattheequipmentforwhichauthorization issoughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. GuangzhouXiangyunFlavorTechnologyCo.,Ltd.certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). █Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, JinchaoLi GuangzhouXiangyunFlavorTechnologyCo.,Ltd. Rev9/15/2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Apr.02,2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BUUT-A2500 GuangzhouXiangyunFlavorTechnologyCo.,Ltd.certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofits subsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, JinchaoLi GuangzhouXiangyunFlavorTechnologyCo.,Ltd.

GuangzhouXiangyunFlavorTechnologyCo.,Ltd. Date：Apr.02,2026 ProductModelNumber:A2500 FCCID：2BUUT-A2500 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:JinchaoLi Email: [email protected] Telephone: 13825105513 Onbehalfof:GuangzhouXiangyunFlavorTechnologyCo.,Ltd

GuangzhouXiangyunFlavorTechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:April2,2026 Subject;RequestforConfidentiality FCCID:2BUUT-A2500 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. █SchematicDiagram █BlockDiagram PartsList █OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); █ExternalPhotos █TestSetupPhotos █InternalPhotos █UserManual █For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:JinchaoLi Title:Manager

version01 Guangzhou Xiangyun Flavor Technology Co., Ltd. Model difference statement It is hereby declared that the product FCC ID: 2BUUT-A2500 Product Name: Aroma Diffuser Model(s): A2500, A2500B, A600, A2000, A3000, M600 Mark: Maonoal All the models are only different in appearance and color, these product are same PCB Layout, Schematics, BOM. Sincerely, Signature Name: Jinchao Li Title: Manager Applicant Company: Guangzhou Xiangyun Flavor Technology Co., Ltd.

Size: 25*35mm Label Location FCC ID: 2BUUT-A2500 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.

FCC ID: 2BUUT-A2500 RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm2) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f2) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f2) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r2) Where Pd = power density in mW/cm2, Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2. If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation LE Mode Output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK 2.71 1.866 0.00037 1.0 PASS Remark: 1. Antenna gain=-0.58dBi 2. Output power to antenna= Max. output power+ Antenna gain

- Page 1 of 45 - Report No.: HB20260228009E-01 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com Test Report Product: Aroma Diffuser Trade Mark: Maonoal Model Number: A2500 FCC ID: 2BUUT-A2500 Prepared for Guangzhou Xiangyun Flavor Technology Co., Ltd. 302,B2 Building,No.7 Minying Dadaoxi,Xintang Town,Zengcheng District,Guangzhou,Guangdong,China Prepared by Shenzhen HongBiao Certification& Testing Co., Ltd Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen, China Tel.: +86-755-2998 9321 Fax.: +86-755-2998 5110 Website: http://www.sz-hongbiao.com - Page 2 of 45 - Report No.: HB20260228009E-01 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com Table of Contents 1 GENERAL DESCRIPTION ................................................................................................................................... 6 1.1 DESCRIPTION OF EUT ................................................................................................................................................ 6 1.2 TEST MODE .............................................................................................................................................................. 6 1.3 OPERATION CHANNEL LIST ........................................................................................................................................... 7 1.4 TEST SETUP .............................................................................................................................................................. 7 1.5 POWER SETTING CONFIGURATION PARAMETERS ............................................................................................................... 7 1.6 ANCILLARY EQUIPMENT .............................................................................................................................................. 7 2 SUMMARY OF TEST RESULT ............................................................................................................................. 8 3 TEST FACILITIES AND ACCREDITATIONS ............................................................................................................ 9 3.1 TEST LABORATORY ..................................................................................................................................................... 9 3.2 ENVIRONMENTAL CONDITIONS ..................................................................................................................................... 9 3.3 MEASUREMENT UNCERTAINTY ..................................................................................................................................... 9 3.4 TEST SOFTWARE ...................................................................................................................................................... 10 4 LIST OF TEST EQUIPMENT .............................................................................................................................. 11 5 TEST ITEM AND RESULTS ............................................................................................................................... 13 5.1 ANTENNA REQUIREMENT .......................................................................................................................................... 13 5.1.1 Standard Requirement ............................................................................................................................. 13 5.1.2 Test Result ................................................................................................................................................. 13 5.2 CONDUCTED EMISSION ............................................................................................................................................. 14 5.2.1 Limits ........................................................................................................................................................ 14 5.2.2 Test Procedures ......................................................................................................................................... 14 5.2.3 Test Setup.................................................................................................................................................. 15 5.2.4 Test Result ................................................................................................................................................. 15 5.3 RADIATED EMISSION ................................................................................................................................................ 18 5.3.1 Limits ........................................................................................................................................................ 18 5.3.2 Test Procedures ......................................................................................................................................... 18 5.3.3 Test Setup.................................................................................................................................................. 18 5.3.4 Test Result ................................................................................................................................................. 19 5.3.5 Band Edge - Radiated ............................................................................................................................... 23 5.3.6 Spurious emission in restricted band 1000MHz-18000MHz .................................................................... 24 5.4 …

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Summary InvertedFAntennaSpecification ITEMANTSPEC ModelName2.4GANT Center Frequency HorizontalVertical 2400MHz2400MHz2500MHz2400MHz2400MHz2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX.Gain Polarizatio -0.58dBi nHorizontalandVertical AzimuthBeam Pattern Omni-directional Impedance40Ohm AntennaLength12mm ZHUHAIJIELITECHNOLOGYCO.,LTManufactureD AntennaPhoto&Length(mm) AddressNo. 107, Shihua West Road, Zhuhai City, Guangdong Province Antenna typePCB Antenna Horizontal:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-40Scale:5/div Frequency (MHz) Ma Gain(dBi) xMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-30Scale:5/div Frequency (MHz) Ma Gain(dBi) xMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 ANTTestLabs：AttestationofGlobalComplianceCo.,Ltd.