2BB8R-U1Wireless Doorbell

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 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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment The devices has been evaluated to meet general RF exposure requirement the device can be used in portable exposure condition without restriction

Dong Guan Wang Cheng Electronics co.,ltd. [Dong Guan Wang Cheng Electronics co.,ltd.] [Dong Guan Wang Cheng Electronics co.,ltd.]

C5266091_X24_Ed.2 1/1 Dong Guan Wang Cheng Electronics co.,ltd. “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Dong Guan Wang Cheng Electronics co.,ltd. Grantee code: 2BB8R FCC ID: 2BB8R-U1 Contact Name: Jun Li Address: Room 306, Building 2, No. 41 Luobian Road, Hengli Town, Dongguan City, Guangdong Province china Telephone No: 13556794439 Fax No: Email: [email protected] i. [Dong Guan Wang Cheng Electronics 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. The applicant must sign this certification. ii. [Dong Guan Wang Cheng Electronics co.,ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Dong Guan Wang Cheng Electronics 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 . Date: 2023/07/27 Applicant’s Name: Jun Li Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

DongGuanWangChengElectronicsco.,ltd. ProductSimilarityDeclaration EUTDescription:WirelessDoorbell ModelNo.:U1,U2,U3,U4,U5,U6,U7,U8,U9,U10,U11,U12 FCCID:2BB8R-U1 We(DongGuanWangChengElectronicsco.,ltd.)herebystate thatallthemodelsareelectricalidenticalincludingthesame softwareparameterandhardwaredesign(i.e.,circuitdesign,PCB Layout,RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differenceisthemodelname. Signature: Name:JunLi Title:Manager Place,date:Jul26,2023

C5266091_X8_Ed.1 1/1 Letter of Authorization Dong Guan Wang Cheng Electronics co.,ltd. Company: Dong Guan Wang Cheng Electronics co.,ltd. Address: Room 306, Building 2, No. 41 Luobian Road, Hengli Town, Dongguan City, Guangdong Province china Product Name: Wireless Doorbell Model Number: U1,U2,U3,U4,U5,U6,U7,U8,U9,U10,U11,U12 FCC Identifier: 2BB8R-U1 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Jun Li Date: 2023.07.27 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 Dong Guan Wang Cheng Electronics co.,ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2023-07-27 Subject: Request for Confidentiality FCC ID: 2BB8R-U1 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Jun Li Title: Manager 2023.07.27

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LabelandLabelLocation FCCID:2BB8R-U1

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FCCRFExposure EUTDescription:WirelessDoorbell ModelNo.:U1,U2,U3,U4,U5,U6,U7,U8,U9,U10,U11,U12 FCCID:2BB8R-U1 Equipmenttype:PortableDevice AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093 ， Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheadorbody and10-gextremitySARevaluationforgeneralpopulationexposureconditions,bymeasurementor numericasimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholocondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances<50mm,the1-gand10-gSARtestexclusion thresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distancemm)]·[vfGHz)]<3.0for1-gSAR,ands7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison EIRP=EMeas+20log(dmeas)-104.7 EIRPistheequivalentisotropicallyradiatedpower, EMeasindBmisthefieldstrengthoftheemissionatthemeasurementdistance,indBuV/m dMeasisthemeasurementdistance,inm Field strength(dBuV/m) EIRP(dBm)Maxtune- up(mW) Frequency(MHz)Min. distance(mm) Calc. thresholds limit 86.04-9.11760.1225433.9250.01613.0 Conclusion:NoSARisrequired

Manufacture's Name:Dong Guan Wang Cheng Electronics co.,ltd. Address:Room 306, Building 2, No. 41 Luobian Road, Hengli Town, Dongguan City, Guangdong Province china 16±0.5 0.5 Model Name:GTBV Gain (dBi):0 dBi

FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com FCCTestReport ReportNo:FCS202307005W01 Issuedfor Applicant: DongGuanWangChengElectronicsco.,ltd. Address: Room306,Building2,No.41LuobianRoad,HengliTown, DongguanCity,GuangdongProvincechina ProductName: WirelessDoorbell BrandName: FOVKSUC ModelName: U1 SeriesModel: U1,U2,U3,U4,U5,U6,U7,U8,U9,U10,U11,U12 FCCID: 2BB8R-U1 IssuedBy:FluxComplianceServiceLaboratory Add:Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-Tech Industrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com Page 2 of24ReportNo.:FCS202307005W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TESTRESULTCERTIFICATION Applicant’sName......................:DongGuanWangChengElectronicsco.,ltd. Address......................................: Room306,Building2,No.41LuobianRoad,HengliTown, DongguanCity,GuangdongProvincechina Manufacture'sName ................ :DongGuanWangChengElectronicsco.,ltd. Address......................................: Room306,Building2,No.41LuobianRoad,HengliTown, DongguanCity,GuangdongProvincechina ProductDescription ProductName...........................:WirelessDoorbell BrandName ............................. :FOVKSUC ModelName..............................:U1 SeriesModel..............................:U1,U2,U3,U4,U5,U6,U7,U8,U9,U10,U11,U12 TestStandards .......................... :FCCRulesandRegulationsPart15SubpartC,Section231 TestProcedure .......................... :ANSIC63.10:2013 ThisdevicedescribedabovehasbeentestedFCS,thetestresultsshowthattheequipmentundertest (EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofFCS,thisdocument maybealteredorrevisedbyFCS,personalonly,andshallbenotedintherevisionofthedocument.. DateofTest..................................: Date(s)ofperformanceoftests.:Jul05,2023~Jul13,2023 DateofIssue.................................:Jul13,2023 TestResult ..................................... :Pass Testedby: (ScottShen) Reviewedby : (DukeQian) Approvedby: (JackWang) Page 3 of24ReportNo.:FCS202307005W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.FCS-lab.com TableofContentsPage 1.SUMMARYOFTESTRESULTS................................................................................................5 1.1TESTFACTORY..................................................................................................................6 1.2MEASUREMENTUNCERTAINTY......................................................................................6 2.GENERALINFORMATION.........................................................................................................7 2.1GENERALDESCRIPTIONOFTHEEUT...........................................................................7 2.2DESCRIPTIONOFTHETESTMODES.............................................................................8 2.3DESCRIPTIONOFNECESSARYACCESSORIESANDSUPPORTUNITS....................9 2.4EQUIPMENTSLIST...........................................................................................................10 3.RADIATEDEMISSIONMEASUREMENT................................................................................11 3.1LIMIT...................................................................................................................................11 3.2TESTPROCEDURE..........................................................................................................12 3.3TESTSETUP.....................................................................................................................13 3.4TESTRESULTS.................................................................................................................14 4.TRANSMITTERTIME...............................................................................................................18 4.1LIMIT..................................................................................................................................18 4.2TESTPROCEDURE..........................................................................................................18 4.3TESTSETUP.....................................................................................................................18 4.4TESTRESULTS.................................................................................................................18 5.20DBBANDWIDTHTEST.......................................................................................................19 5.1LIMIT..................................................................................................................................19 5.2TESTPROCEDURE..........................................................................................................19 5.3TESTSETUP.....................................................................................................................19 5.4TESTRESULTS.................................................................................................................20 6.DUTYCYCLE............................................................................................................................21 6.1LIMIT..................................................................................................................................21 6.2TESTPROCEDURE..........................................................................................................21 6.3TESTSETUP...........................................................................................................…

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