B28 subwoofer Cover Letter(s) - FCC ID 2BVWW-B28

FCC ID 2BVWW-B28

Letter of declaration model difference

subwoofer

by Zefeng Audio Technology (Shenzhen) Co., Ltd

Document preview loads when visible.

Document Details

FCC ID2BVWW-B28
Document ID9438976
Document TypeCover Letter(s)
DescriptionLetter of declaration model difference
ApplicantZefeng Audio Technology (Shenzhen) Co., Ltd
Equipment Classsubwoofer
Product CodeB28
Application IDpSrxZO+wxH5AmB6UJBReGg==
Application PurposeOriginal Equipment
Application Date2026-07-03
Frequency Range5727-5848 MHz
FRN0038359311
Test FirmSHENZHEN GLOBAL TEST SERVICE CO LTD
Certified ByRene Ren
Short-Term ConfidentialityNo
Long-Term ConfidentialityNo
Modular EquipmentDoes not apply
Composite DeviceNo
Submitted2026-07-03
Available2026-07-03
Created2026-07-03
Modified0002-01-01
Pages1
File TypeAdobe Acrobat PDF
File Size128410
File SHA-2563c33c4bb80ab5be96e365c95173139aeae1406aa593feec37a9b31ef892e792f
PDF Metadata Authorwenliang li
PDF Metadata Producerwenliang li 福昕PDF生成器版本8.0.2.0718
FCC.gov SourcesFCC.gov 9438976

Related FCC Exhibits

DocumentTypeAvailableFile
User manualUsers Manual2026-07-03PDF 2.1 MB
Internal photosInternal Photos2026-07-03PDF 1.1 MB
External photosExternal Photos2026-07-03PDF 1.1 MB
Label and label locationID Label/Location Info2026-07-03PDF 101.7 KB
Test setup photosTest Setup Photos2026-07-03PDF 412 KB
Antenna informationTest Report2026-07-03PDF 553.2 KB
Test ReportTest Report2026-07-03PDF 3.7 MB
Agent attestation letterAttestation Statements2026-07-03PDF 132 KB
Covered equipment letterAttestation Statements2026-07-03PDF 260.2 KB
Due digilence letterAttestation Statements2026-07-03PDF 243.1 KB
Confidentiality request letterCover Letter(s)2026-07-03PDF 263.8 KB
Letter of declaration model differenceCover Letter(s)2026-07-03PDF 125.4 KB
RF exposure evaluationRF Exposure Info2026-07-03PDF 822.1 KB
Block diagram Metadata onlyBlock DiagramPDF 111.1 KB
Schematic Metadata onlySchematicsPDF 285 KB
Operation description Metadata onlyOperational DescriptionPDF 209 KB