2BAYA-178MINIBluetooth mechanical keyboard

132.00 mm 9 0 . 0 0 m m IN THE BOX: Bluetooth mechanical keyboard ×1 The USB line x 1 Pull out key x 1 Distribution key cap ×1 Instruction x 1 Keyboard bag x 1 178-61Bluetooth mechanical keyboard Quick Start Guide If you are a Windows user, press FN+Z to switch to Windows Mac/Windows 1. Connect the Bluetooth Turn on the power Fn +Q puts the keyboard into pairing mode， The keyboard pairing name is CK 178-61 5.0 2. Connect the cable Fn +T puts the keyboard into wired mode 4. Change the lamp effect Fn + \ | keyboard into the lighting mode Fn + > Switch colors Fn +L makes the keyboard enter Side indicator mode switch 5. Disable the auto sleep mode If you sit for two minutes without using it, the keyboard automatically goes into sleep mode to save power 178-61 Keyboard specifications Key: 61 key Switch: Mechanical Battery: 1600 mAh Working time: about 6 hours when the backlight is on Charging time: 3 hours Charin ort: USB Te-c Bluetooth name: CK 178-61 5.0 Charging Charge ESC key under the white light is always bright, full of light off, low voltage red flashing. *1, light working current 250MA sustainable time about 6 hours (always working). *2, lamp off working current 40MA sustainable time about 36 hours (always working). *3, standby current 0.5mA Standby time of about 55 days. *4, the keyboard has no action for 2 minutes. Enter the standby mode. Press any key to start the keyboard and enter the working mode. Backlight and side light - short press fn + \ | swappable backlighting lighting model - Press FN + > to switch the backlight color - Press FN +《Light brightness reduction - Press FN +》 to increase light intensity - Press fn+L to switch modes Bluetooth Bluetooth mode 1. Wave the keyboard toggle switch to "ON". 2. Keyboard backlight will turn on. 3. Hold down fn+Q for 4 seconds to activate Bluetooth pairing (Q blinks). 4. Search your device for the Bluetooth device "CK 178-61 5.0" and connect (the Q key is always on when the pairing is successful). Note :(this keyboard supports three devices through key combination "fn+Q", "fn+W" and "fn+E") The cable model 1. Use USB Type-C to connect to the computer 2. Keyboard backlight will turn on. 3. Hold down fn+T (T blinks at short intervals and is steady on after the connection is successful). Back to the 1. The keyboard starts on the last connected device by default 2. Fn +Q (fn+W, fn+E) The white indicator blinks back to connect slowly * The keyboard must have been paired with a modified device to enable this function Close the keyboard Turn the wave switch to OFF. At this time, the bluetooth mode of this product are turned OFF, and the wired mode and charging can be carried out。 ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwo conditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustaccept anyinterferencereceived,includinginterferencethatmaycauseundesiredoperation NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigital device,pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonable protectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates, usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications.However,thereisno guaranteethat interferencewillnotoccurinaparticularinstallation. Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,whichcanbe determinedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe interferencebyoneormoreofthefollowingmeasures: --Reorientorrelocatethereceivingantenna. --Increasetheseparationbetweentheequipmentandreceiver. --Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveris connected. --Consultthedealeroranexperiencedradio/TVtechnicianforhelp. Warning:changesormodificationsnotexpresslyapprovedbythepartyresponsiblefor compliancecouldvoidtheuser'sauthoritytooperatetheequipment ThedeviceshasbeenevaluatedtomeetgeneralRFexposurerequirement，thedevicecanbe usedinportableexposureconditionwithoutestriction

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: GSS SERVICE INC FRN: 0033402082 Contact Name：Michoux Logan Address: 6547 N Academy Blvd #2266 Colorado Springs Co 80918 USA Telephone: 0033402082 Email: [email protected] Applicant: Company name:Shenzhen Diyun Interlligent Co.,LTD Product Description: Bluetooth mechanical keyboard Grantee code:2BAYA FCC ID:2BAYA-178MINI Contact Name:Ronbin Address:309-10，Building 512,Bagualing Industrial Zone,No.33 Bagualing Road, Hualin Community,Yuanling Street,Futian District,Shenzhen Telephone No: 13861717578 Email: [email protected] [Shenzhen Diyun Interlligent Co.,LTD] certifies that, as of the date of this filing of the application with the TCB, [GSS SERVICE INC] is our designated US agent for service of process for the above referenced FCC ID. [Shenzhen Diyun Interlligent 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 equipment. [GSS SERVICE INC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 04/21/2023 Applicant’s Name:Robin Sun US Agent’s Name: Michoux Logan Title:Manager Title: Manager Signature Signature

C5266091_X24_Ed.2 1/1 ShenzhenDiyunInterlligentCo.,LTD “AttestationStatements” TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:ShenzhenDiyunInterlligentCo.,LTD Granteecode:2BAYA FCCID:2BAYA-178MINI ContactName:RobinSun Address:309-10，Building512,BagualingIndustrialZone,No.33BagualingRoad, HualinCommunity,YuanlingStreet,FutianDistrict,Shenzhen TelephoneNo:13861717578 FaxNo: Email:[email protected] i.[ShenzhenDiyunInterlligentCo.,LTD](“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Theapplicantmustsignthiscertification. ii.[ShenzhenDiyunInterlligentCo.,LTD](“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicant[isnot](asaspecificallynamed entityoranyofitssubsidiariesoraffiliates)identifiedontheCoveredListas anentityproducing“covered”equipment.Theapplicantmustsignthis certification. iii. [ShenzhenDiyunInterlligentCo.,LTD](“theapplicant”)certifiesthat,asofthedateofthe filingofthe application,theapplicant[isnot]identifiedontheCoveredList asanentityproducing“covered” equipment. Date:2023/05/04 Applicant’sName:RobinSun Title::Manager Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist C5266091_X24_Ed.2 1/1

C5266091_X8_Ed.1 1/1 LetterofAuthorization ShenzhenDiyunInterlligentCo.,LTD Company:ShenzhenDiyunInterlligentCo.,LTD Address:309-10，Building512,BagualingIndustrialZone,No.33 BagualingRoad,HualinCommunity,YuanlingStreet,Futian District,Shenzhen ProductName:Bluetoothmechanicalkeyboard ModelNumber:178mini FCCIdentifier:2BAYA-178MINI WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:RobinSunDate:2023.05.04 Title:Manager Signatureofapplicant:

C5266091_X10_Ed.2 1/1 ShenzhenDiyunInterlligentCo.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2023-05.04 Subject:RequestforConfidentiality FCCID:2BAYA-178MINI ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof______daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:RobinSun Title:Manager 2023.05.04

Page1of3ReportNo.:FCS202208076 Externalphotos Photo1 Photo2 Page2of3ReportNo.:FCS202208076 Photo3 Photo4 Page3of3ReportNo.:FCS202208076 Photo5 Photo6

LabelandLabelLocation FCCID:2BAYA-178MINI

Page1of4ReportNo.:FCS202208076 Internalphotos Photo1 Photo2 Page2of4ReportNo.:FCS202208076 Photo3 Photo4 Page3of4ReportNo.:FCS202208076 Photo5 Photo6 Page4of4ReportNo.:FCS202208076 Photo7 Photo8 PCBANTENNA

FCCRFExposure EUTDescription:Bluetoothmechanicalkeyboard ModelNo.:178mini FCCID:2BAYA-178MINI Equipmenttype:PortableDevice 1.TestProcedure AccordingtoKDB447498D01GeneralRFExposureGuidancev06 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattest separationdistances ≤ 50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/ (min.testseparationdistance,mm)] · [ √ f(GHz)] ≤ 3.0for1-gSARand ≤ 7.5for10-g extremitySAR, where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbefore calculationTheresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparation distanceis≤50mmandfortransmissionfrequenciesbetween100MHzand6GHz. Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmisappliedto determineSARtestexclusion. 2.TestResultofRFExposureEvaluation [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]=3.715/5*√2.402=1.1515≤3.0ThresholdatwhichnoSARrequiredis and≤3.0for1-gSAR,Separationdistanceis5mm. Mode Channel Freq.(MHz) Maximum Conducted Output Power(PK) AntennaGain (dBi) Antenna gainnumeric Tune-up power (dBm) Maxtune- uppower (W) GFSK 24024.702.341.714.70±10.003715 24404.612.341.714.61±10.003639 24804.582.341.714.58±10.003614

FCCTestReport ReportNo:FCS202208076W01 Issuedfor Applicant: ShenzhenDiyunInterlligentCo.,LTD Address: 309-10，Building512,BagualingIndustrialZone,No.33 BagualingRoad,HualinCommunity,YuanlingStreet,Futian District,Shenzhen ProductName: Bluetoothmechanicalkeyboard BrandName: Coolkiller ModelName: 178mini SeriesModel: N/A FCCID: 2BAYA-178MINI IssuedBy:FluxComplianceServiceLaboratory Add:Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-Tech Industrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com Page 2 of39ReportNo.:FCS202208076W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TESTRESULTCERTIFICATION Applicant’sName......................:ShenzhenDiyunInterlligentCo.,LTD Address......................................: 309-10，Building512,BagualingIndustrialZone,No.33Bagualing Road,HualinCommunity,YuanlingStreet,FutianDistrict,Shenzhen Manufacture'sName................:DongguandieyunInnovationTechnologyCo.,Ltd Address......................................:No.22,Xiyuan1stRoad,ShapingbaDistrict,Chongqing,China ProductDescription ProductName...........................:Bluetoothmechanicalkeyboard BrandName...............................:Coolkiller ModelName..............................:178mini SeriesModel..............................:N/A TestStandards .......................... :FCCRulesandRegulationsPart15SubpartC,Section247 TestProcedure..........................:ANSIC63.10:2013 ThisdevicedescribedabovehasbeentestedbyFluxComplianceServiceLaboratory,thetestresults showthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditis applicableonlytothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofFluxCompliance ServiceLaboratory,thisdocumentmaybealteredorrevisedbyFluxComplianceServiceLaboratory, personalonly,andshallbenotedintherevisionofthedocument.. DateofTest..................................: Date(s)ofperformanceoftests.:August12,2022~August16,2022 DateofIssue.................................:August16,2022 TestResult .................................... :Pass Testedby: (ScottShen) Reviewedby : (DukeQian) Approvedby: (JackWang) Page 3 of39ReportNo.:FCS202208076W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TableofContentsPage 1.SUMMARYOFTESTRESULTS..............................................................................................6 1.1TESTFACTORY................................................................................................................7 1.2MEASUREMENTUNCERTAINTY....................................................................................7 2.GENERALINFORMATION......................................................................................................8 2.1GENERALDESCRIPTIONOFTHEEUT.........................................................................8 2.2BLOCKDIGRAMSHOWINGTHECONFIGURATIONOFSYSTEMTESTED.............10 2.3DESCRIPTIONOFNECESSARYACCESSORIESANDSUPPORTUNITS................11 2.4EQUIPMENTSLIST.........................................................................................................12 3.CONDUCTEDEMISSIONMEASUREMENT.........................................................................13 4.6DBBANDWIDTH..................................................................................................................17 4.1Limit..................................................................................................................................17 4.2TestProcedure.................................................................................................................17 4.3Testsetup.........................................................................................................................17 4.4Testresults.......................................................................................................................17 4.5OriginalTestData............................................................................................................18 5.CONDUCTEDOUTPUTPOWER...........................................................................................21 5.1LIMIT................................................................................................................................21 5.2TESTPROCEDURE........................................................................................................21 5.3TESTSETUP...................................................................................................................21 5.5TESTRESULTS..............................................................................................................21 6.BANDEDGEANDSPURIOUS(CONDUCTED)....................................................................22 6.1LIMIT................................................................................................................................22 6.2TESTPROCEDURE........................................................................................................22 6.3TESTSETUP...................................................................................................................22 6.4TESTRESULTS..............................................................................................................23 7.POWERSPECTRALDENSITY..............................................................................................26 7.1LIMIT................................................................................................................................26 7.2TESTPROCEDURE........................................................................................................26 7.3TESTSETUP..................................................…

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Antenna Specification Specifications Summary ITEMSPEC. Model NameIBM 2.4 GHz Center Frequency 2402 MHz 2441 MHz 2480 MHz 2.34 dBi 2.07dBi 1.45 dBi MAX. GAIN2.34 dBi PolarizationHorizontal Azimuth Beam Pattern Omni-directional Impedance50Ω Antenna Length3.1cm Antenna Photo & Length (mm) Test Address 16 Tzu Chiang Road, Hsinchu Industrial District Hsinchu Hsien 303, Taiwan Test Date2009-04-14 Test Instrument vector network analyzer - R&S ZVB20 1. Main antenna : 2402 MHz 1.1 Horizontal Frequency(MHZ):2402Antenna Polarity:Horizontal Maximum Gain(dBi): 2.34 Average Gain(dBi):-2.48 Minim um Gain(dBi):-55.18 1.2 Vertical Frequency(MHZ):2402Antenna Polarity:Vertical Maximum Gain(dBi): -4.51 AverageGain(dBi) :-8.98 Minimum Gain(dBi):-62.3 2. Main antenna : 2441 MHz 2.1 Horizontal Frequency(MHZ):2441Antenna Polarity:Horizontal Maximum Gain(dBi): 2.07 Average Gain(dBi) : -2.54 Minimum Gain(dBi): -66.98 2.2 Vertical Frequency(MHZ):2441Antenna Polarity:Vertical Maximum Gain(dBi): -4.29 AverageGain(dBi) :-8.81 Minimum Gain(dBi):-51.4 2. Main antenna : 2480 MHz 2.1 Horizontal Frequency(MHZ): 2480AntennaPolarity:Horizontal Maximum Gain(dBi):1.45 AverageG ain(dBi) : -3.34 Minimum Gain(dBi): -53.4 2.2 Vertical Frequency(MHZ):2480Antenna Polarity:Vertical Maximum Gain(dBi): -4.95 AverageGain(dBi) :-9.06 Minimum Gain(dBi):-60.00

Page 1 of2ReportNo.:FCS202208076 Blow1GHzforradiatedemissiontestsetup Above1GHzforradiatedemissiontestsetup Page 2 of2ReportNo.:FCS202208076 Conductedemissiontestsetup