1. FCC ID
  2. 2BKI4
  3. 2BKI4-M557

FCC ID 2BKI4-M557

Wireless doorbell

by Guangdong Tianmai IoT Technology Co., Ltd

Grantee Code: 2BKI4   Product Code: M557
Latest application date: 2025-04-22

FCC ID Device Details

FCC ID2BKI4-M557
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2BKI4
Product CodeM557
Applicant BusinessGuangdong Tianmai IoT Technology Co., Ltd 🇨🇳
Equipment ClassWireless doorbell
Test FirmShenzhen HTT Technology Co.,Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
433.943 MHzOriginal Equipment2025-04-22

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2025-04-22PDF 330.8 KB
appendix II EUT Internal photoInternal Photos2025-04-22PDF 399.9 KB
appendix II EUT External photoExternal Photos2025-04-22PDF 571.8 KB
Label and Label LocationID Label/Location Info2025-04-22PDF 96.1 KB
appendix I EUT Test Setup photoTest Setup Photos2025-04-22PDF 126.5 KB
Antenna SpecificationTest Report2025-04-22PDF 572.1 KB
HTT2025031251F01_Test Report-433Test Report2025-04-22PDF 1.1 MB
USA-CoveredEquipmentLetter-Combined_V1.1Attestation Statements2025-04-22PDF 121.5 KB
USA-LocalRepLetter_V1.1 - 2BKI4-M557Attestation Statements2025-04-22PDF 369 KB
USA-ConfidentialityRequestLetter_V0.1Cover Letter(s)2025-04-22PDF 102.1 KB
HTT2025031251F02_RF Exposure-infoRF Exposure Info2025-04-22PDF 342.8 KB
Block diagram Metadata onlyBlock DiagramPDF 82 KB
schematic Metadata onlySchematicsPDF 45.3 KB
Operation Description Metadata onlyOperational DescriptionPDF 123 KB
USA-DueDigilenceLetter_V0.1 Metadata onlyOperational DescriptionPDF 146.6 KB

Application Information

Application IDICNpsUj1BaApjEErZ8geSQ==
Final Action Date2025-04-22
Application PurposeOriginal Equipment
Applicant FRN0035852706
ModelM557
Frequency Range433.943 MHz
Equipment ClassDSC - Part 15 Security/Remote Control Transmitter
Device DescriptionWireless doorbell
Responsible PartyQingLong Yang, szdahua138@126.com , 13603034005
Test FirmKevin Yang, Shenzhen HTT Technology Co.,Ltd., info@httprc.com , 86-755-23595200
TCB Emailo.kneip@kl-certification.de
TCB ScopeA1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Grant DeferralNo
Modular EquipmentDoes not apply
Composite DeviceNo
Composite PartNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
ICNpsUj1BaApjEErZ8geSQ==2025-04-22Original Equipment

Equipment Authorization

Frequency
433.943 MHz

Grants

TCB Grant - Application ICNpsUj1BaApjEErZ8geSQ==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  KL-Certification GmbH
Heinrich-Hertz-Allee 7
St. Ingbert, 66386
Germany 		Date of Grant: 04/22/2025

Application Dated: 04/22/2025
Guangdong Tianmai IoT Technology Co., Ltd
Room 401, Building 3, No. 8 Jinshun Road,
Fenggang Town
Dongguan City, Guangdong Province,
China
 
Attention: QingLong Yang ,

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  2BKI4-M557
Name of Grantee:  Guangdong Tianmai IoT Technology Co., Ltd
Equipment Class: Part 15 Security/Remote Control Transmitter
Notes: Wireless doorbell
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15.231 433.943  -  433.943