1. FCC ID
  2. 2BMBA
  3. 2BMBA-ACN4521

FCC ID 2BMBA-ACN4521

Wireless Earphones

by Guangzhou Siyuetian Electronic Technology Co., Ltd.

Grantee Code: 2BMBA   Product Code: ACN4521
Latest application date: 2025-08-20

FCC ID Device Details

FCC ID2BMBA-ACN4521
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2BMBA
Product CodeACN4521
Applicant BusinessGuangzhou Siyuetian Electronic Technology Co., Ltd. 🇨🇳
Equipment ClassWireless Earphones
Test FirmShenzhen HTT Technology Co.,Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzOriginal Equipment2025-08-20

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2025-08-20PDF 945.4 KB
appendix II EUT Internal photoInternal Photos2025-08-20PDF 845.4 KB
appendix II EUT External photoExternal Photos2025-08-20PDF 1.4 MB
Label and Label LocationID Label/Location Info2025-08-20PDF 268.5 KB
appendix I EUT Test Setup photoTest Setup Photos2025-08-20PDF 501.6 KB
Antenna specifictaionTest Report2025-08-20PDF 561.6 KB
Appendix RF Test Data for BTTest Report2025-08-20PDF 3 MB
HTT202508017F01_Test Report BTTest Report2025-08-20PDF 1.2 MB
USA-CoveredEquipmentLetter-Combined_V1.1Attestation Statements2025-08-20PDF 121.4 KB
USA-LocalRepLetter_V1.1 - 2BMBA-ACN4521Attestation Statements2025-08-20PDF 355 KB
USA-ConfidentialityRequestLetter_V0.1Cover Letter(s)2025-08-20PDF 102 KB
HTT202508017F02_RF Exposure-infoRF Exposure Info2025-08-20PDF 401.2 KB
Block diagram Metadata onlyBlock DiagramPDF 83 KB
schematic Metadata onlySchematicsPDF 48.2 KB
Operation Description Metadata onlyOperational DescriptionPDF 179.1 KB
USA-DueDigilenceLetter_V0.1 Metadata onlyOperational DescriptionPDF 148.8 KB

Application Information

Application ID59aQ+Ugp/Qp0QfCQaaf+eA==
Final Action Date2025-08-20
Application PurposeOriginal Equipment
Applicant FRN0036300564
ModelACN4521
Frequency Range2402-2480 MHz
Equipment ClassDSS - Part 15 Spread Spectrum Transmitter
Device DescriptionWireless Earphones
Responsible PartyYanlin Zeng, 1377584082@qq.com , 15112879145
Test FirmKevin Yang, Shenzhen HTT Technology Co.,Ltd., info@httprc.com , 86-755-23595200
TCB Emailo.kneip@kl-certification.de
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
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
Grant CommentsOutput Power listed is peak conducted.

Applications

Application IDDatePurpose
59aQ+Ugp/Qp0QfCQaaf+eA==2025-08-20Original Equipment

Equipment Authorization

FrequencyOutput
2402-2480 MHz0.0018000

Grants

TCB Grant - Application 59aQ+Ugp/Qp0QfCQaaf+eA==

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: 08/20/2025

Application Dated: 08/20/2025
Guangzhou Siyuetian Electronic Technology Co., Ltd.
4th Floor, No. 75, Street 1,
Xiajiao Lingnan E-commerce Park,
Panyu District, Guangzhou,
China
 
Attention: Yanlin Zeng ,

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:  2BMBA-ACN4521
Name of Grantee:  Guangzhou Siyuetian Electronic Technology Co., Ltd.
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: Wireless Earphones
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0018  

Output Power listed is peak conducted.