2AXO7LDBWireless Doorbell
LINGWEIDA Technology Co.,LTD
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Application Details
- Equipment Class
- DSC - Part 15 Security/Remote Control Transmitter
- Date of Grant
- Oct 12, 2020
- Application Purpose
- Original Equipment
- Date of Application
- Oct 12, 2020
- Equipment Note
- Wireless Doorbell
- Frequency Range
- 433.92000000 - 433.92000000
- Company
- LINGWEIDA Technology Co.,LTD
- Country
- China
Documents & Files
Document Text
Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.
Users Manual
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Cover Letter(s)
DifferencesDeclaration Towhomconcern, WecompanyLINGWEIDATechnologyCo.,LTDHerebydeclares: Theproductmodel(s) LDB-A12,LDB-A21,LDB-A22,LDB-A31,LDB-A32, WD-11,WD-21,WD-12,WD-22,WD-31,WD-32 arethesamePCBlayout, electronicschematicandAntennawith LDB-A11 whichtestedin STANDARD-TECHTESTINGSERVICESThemainandseries modelsarejustnameddifferently.Andeachmodelhasadifferent appearanceandcolor. Sincerelyyours, Name:HAI.ZHOU Companyname: LINGWEIDATechnologyCo.,LTD Companyaddress: 5thFloor,BuildingA,LeZhuJiaoHongzhuYongQiScienceand TechnologyPark,JiuweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China Tel:15014236060 E-Mail:[email protected]
Cover Letter(s)
LINGWEIDATechnologyCo.,LTD 2020.8.14 EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR ProductName:WirelessDoorbell Trademark: ModelNumber(s):LDB-A11,LDB-A12,LDB-A21,LDB-A22,LDB-A31,LDB-A32, WD-11,WD-21,WD-12,WD-22,WD-31,WD-32. FCCID:2AX07LDB ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe -BlockDiagram -Schematics -Operationdescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublic review.Theabovematerialscontaintradesecretsandproprietaryinformationnot customarilyreleasedtothepublic.Thepublicdisclosureofthesematerialsmaybe harmfultotheapplicantandprovideunjustifiedbenefitstoitscompetitors. Pleasecontactmeifthereisanyinformationyoumayneed. Client’ssignature: Client’sname/title:HAI.ZHOU Contactinformation/address:5thFloor,BuildingA,LeZhuJiaoHongzhuYongQi ScienceandTechnologyPark,JiuweiCommunity,HangchengStreet,Baoan District,Shenzhen,China
Cover Letter(s)
LINGWEIDATechnologyCo.,LTD 2020-08-14 EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeSTANDARD-TECHTESTINGSERVICES/Standard- TechBuilding,No.6GuanhongRoad,GuangzhouScienceCity,Guangzhou510663,Chinatoact onourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthe signingofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. PrintedNameofAuthorizedApplicantContact: SignatureofAuthorizedApplicantContact:HAI.ZHOU TitleofAuthorizedApplicantContact:Engineer Date:2020-10-08
External Photos
Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.AppendixPage 1 of 1 PhotooftheEUT
Internal Photos
Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.AppendixPage 1 of 2 PhotooftheEUT Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.AppendixPage 2 of 2
RF Exposure Info
FCCID：2AXO7LDB RFExposureEvaluation 1.StandaloneSARtestexclusion KDB447498D01GeneralRFExposureGuidancev06,Clause4.3.1(a) [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0 Where -f(GHz)istheRFchanneltransmitfrequencyinGHz -PoweranddistanceareroundedtothenearestmWandmmbeforecalculation -Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm,andfor transmission frequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis<5mm,a distanceof5mmaccordingto4.1f)isappliedtodetermineSARtestexclusion. TestFrequency (MHz) Level (dBuV/m) Level (mW) TestDistance (mm) TestdataLimit SAR Exclusion 433.9267.2510.2651.352<3Pass Note: Thebelowinformationisdeclaredbytheapplicant,theexposuresafetydistanceis5mm
Test Report
Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.Page 1 of 18 CCPART15CTESTREPORTFORCERTIFICATION OnBehalfof LINGWEIDATechnologyCo.,LTD *************************************** FCCID：2AXO7LDB ReportType： STD-JBO200907F ProductType： wirelessdoorbell TestEngineer:ClintChen ReportNumber:STD-JBO200907F ReportDate:2020-09-29 ReviewedBy: LionLi PreparedBy: Standard-TechCo.,Ltd.TestingCenter Standard-TechBuilding,No.6GuanhongRoad,Guangzhou ScienceCity,Guangzhou510663,China Tel:+86-20-32290320/32290719 Fax:+86-20-32290422/32290556 www.standard-tech.com ThedevicedescribedaboveistestedbyStandard-TechCo.,Ltd.TestingCenter.toconfirmcomplywithalltheFCCPart15SubpartCrequirements.Thetestresultsare containedinthistestreportandStandard-TechCo.,Ltd.TestingCenterisassumedfullresponsibilityfortheaccuracyandcompletenessofthesetests.Also,thisreport showsthattheEquipmentUnderTest(EUT)istobetechnicallycompliantwiththeFCCrequirements.ThisReportismadeunderFCCPart2.1074.Nomodifications wererequiredduringtestingtobringthisproductintocompliance.Thisreportappliestoabovetestedsampleonly.Thisreportshallnotbereproducedinpartwithout writtenapprovalofStandard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.Page 2 of 18 TABLEOFCONTENTS DescriptionPage 1.SUMMARYOFSTANDARDSANDRESULTS.............................................................3 1.1.DescriptionofStandardsandResults.......................................................................................3 2.GENERALINFORMATION.............................................................................................4 2.1.DescriptionofEquipmentUnderTest.....................................................................................4 2.2.EquipmentsUsedduringtheTest............................................................................................4 2.3.TestFacility..............................................................................................................................6 2.4.MeasurementUncertainty(95%confidencelevels,k=2)........................................................6 3.POWERLINECONDUCTEDEMISSIONTEST...........................................................7 3.1.BlockDiagramofTestSetup...................................................................................................7 3.2.PowerLineConductedEmissionTestLimits..........................................................................7 3.3.TestProcedure..........................................................................................................................7 3.4.RadiatedEmissionTestResults...............................................................................................7 4.RADIATEDEMISSIONTEST........................................................................................10 4.1.BlockDiagramofTestSetup.................................................................................................10 4.2.RadiatedEmissionLimit........................................................................................................11 4.3.OperatingConditionofEUT..................................................................................................11 4.4.TestProcedure........................................................................................................................11 4.5.RadiatedEmissionTestResults.............................................................................................11 5.STOPTRANSMITTINGTIMETEST...........................................................................15 5.1.Limit.......................................................................................................................................15 5.2.Testresult...............................................................................................................................15 6.CEASETIMEAFTERACTIVATIONTEST................................................................16 6.1.Limit.......................................................................................................................................16 6.2.TestResults............................................................................................................................16 7.20dBBandwidthTest........................................................................................................17 7.1.BlockDiagramofTestSetup.................................................................................................17 7.2.Limit.......................................................................................................................................17 7.3.TestResults............................................................................................................................17 8.ANTENNAREQUIREMENT..........................................................................................18 Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.Page 3 of 18 1.SUMMARYOFSTANDARDSANDRESULTS 1.1.DescriptionofStandardsandResults TheEUThasbeentestedaccordingtotheapplicablestandardsasreferencedbelow. EMISSION DescriptionofTestItemStandardResults PowerLineConductedEmission FCCPart15:15.207 PASS RadiatedEmission FCCPart15:15.209 FCCPart15:15.205 PASS StopTransmittingTimeTestFCCPart15:15.231(a)(1)PASS CeaseTimeAfterActivationFCCPart15:15.231(a)(2)PASS 20dBBandwidthTestFCCPart15:15.231(a)(2)PASS Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.Page 4 of 18 2.GENERALINFORMATION 2.1.DescriptionofEquipmentUnderTest Applicant:LINGWEIDATechnologyCo.,LTD Manufacturer:LINGWEIDATechnologyCo.,LTD Factory:LINGWEIDATechnologyCo.,LTD Product:wirelessdoorbell ModelNo.: LDB-A11,LDB-A12,LDB-A21,LDB-A22,LDB-A31, LDB-A32,WD-11,WD-21,WD-12,WD-22,WD-31,WD-32. (Remark:ThecircuitPCBoftheabovemodelisthesameasthe schematicdiagram,butthecoloroftheshellandthenumberof transmittersandreceiversaredifferent;sothetestmodelis…
Text truncated - open the document above for the full version.
Test Setup Photos
Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.AppendixPage 1 of 2 PhotographofTest 1PhotosofPowerLineConductedEmissionTest Standard-TechCo.,Ltd.TestingCenter. Standard-TechCo.,Ltd.TestingCenter.AppendixPage 2 of 2 2PhotosofRadiatedEmissionTest 30-1000MHz Above1000MHz
Contact Information
Applicant
HAI ZHOU
Technical Contact
LINGWEIDA Technology Co.,LTDHAI ZHOU
[email protected]15014236060
5th Floor, Building A, Yongqi Technology Park · SHENZHEN, GUANGDONG · China
Test Firm
Standard-Tech Testing ServicesMichael Xiao
[email protected]862032290132
Technical Specifications
| # | Rule Parts | Frequency Range | Power Output |
|---|---|---|---|
| 1 | 15.231 | 433.92 MHz - 433.92 MHz | - |