1. FCC ID
  2. 2BFI9
  3. 2BFI9-DM1
  4. Model Difference Declaration

DM1 Video Doorbell Cover Letter(s) - FCC ID 2BFI9-DM1

FCC ID 2BFI9-DM1

Model Difference Declaration

Video Doorbell

by Shenzhen Zhongxin Shidai Technology Co.,Ltd.

Document preview loads when visible.

Document Details

FCC ID2BFI9-DM1
Document ID8900435
Document TypeCover Letter(s)
DescriptionModel Difference Declaration
Document TitleModel Difference Declaration
ApplicantShenzhen Zhongxin Shidai Technology Co.,Ltd.
Equipment ClassVideo Doorbell
Product CodeDM1
Application IDruh+3V0Z6ezIKXpUNTMWzw==
Application PurposeOriginal Equipment
Application Date2025-12-17
Frequency Range433.905 MHz
FRN0035157213
Test FirmShenzhen HUAK Testing Technology Co., Ltd.
Certified ByJASON ZHOU
Short-Term ConfidentialityNo
Long-Term ConfidentialityNo
Modular EquipmentDoes not apply
Composite DeviceYes
Submitted2025-12-17
Available2025-12-17
Created2025-12-09
Modified2025-12-09
Pages1
File TypeAdobe Acrobat PDF
File Size20503
File SHA-256ea8409efd38071a1d4aeaee440e454f8a17b7925116e9653b9ca6dc4f89b167b
PDF Metadata AuthorAdministrator
PDF Metadata ProducerAdministrator Acrobat Distiller 11.0 (Windows)
FCC.gov SourcesFCC.gov 8900435, FCC.gov 8900284, FCC.gov 8900183

Related FCC Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2026-06-15PDF 2.3 MB
Internal PhotosInternal Photos2026-06-15PDF 4.3 MB
Internal photosInternal Photos2026-06-15PDF 4.3 MB
External PhotosExternal Photos2026-06-15PDF 2.6 MB
External photosExternal Photos2026-06-15PDF 2.6 MB
Label and locationID Label/Location Info2025-12-17PDF 401.4 KB
Test PhotosTest Setup Photos2025-12-17PDF 796.5 KB
Test Setup photoTest Setup Photos2025-12-17PDF 796.5 KB
Test photosTest Setup Photos2025-12-17PDF 796.5 KB
15.247TestReport-2.4GWiFi 1Test Report2025-12-17PDF 2.3 MB
15.247TestReport-2.4GWiFi 2Test Report2025-12-17PDF 4.9 MB
15.407 Test Report - 5.8GWiFiTest Report2025-12-17PDF 5.2 MB
ANTTest Report2025-12-17PDF 1 MB
ANTTest Report2025-12-17PDF 329.3 KB
TestReport 15.231433.9054MTest Report2025-12-17PDF 3.2 MB
2.911 (d)(5)(i)CertificationEquipmentTypev1.2Attestation Statements2025-12-17PDF 59.3 KB
2.911 (d)(5)(ii)CertificationApplicantv1.3Attestation Statements2025-12-17PDF 55 KB
2.911 (d)(5)(ii)CertificiationApplicantv1.2Attestation Statements2025-12-17PDF 55 KB
2.911 (d)(7)USAgentforServiceofProcessv1.3Attestation Statements2025-12-17PDF 839.2 KB
2.911_(d)(7) US Agent for Service of Process v1.3Attestation Statements2025-12-17PDF 839.2 KB
Agent Authorization Rev 1.0Cover Letter(s)2025-12-17PDF 21.9 KB
AgentAuthorizationRev1.0Cover Letter(s)2025-12-17PDF 21.9 KB
FCC Short & Long Term Confidentiality Request Rev4.1Cover Letter(s)2025-12-17PDF 24.1 KB
FCC Software Configuration Control Declaration Rev1.1Cover Letter(s)2025-12-17PDF 23.2 KB
Model Difference DeclarationCover Letter(s)2025-12-17PDF 20 KB
MPERF Exposure Info2025-12-17PDF 15.7 KB
Block Metadata onlyBlock DiagramPDF 338.8 KB
SCH Metadata onlySchematicsPDF 1.2 MB
Operation Description Metadata onlyOperational DescriptionPDF 8.3 KB
Operational Description Metadata onlyOperational DescriptionPDF 8.3 KB
FCC Software Security Requirements for UNII devices Rev 2.1 Metadata onlySDR Software/Security Info.PDF 3.4 MB