1. FCC ID
  2. 2A9MI
  3. 2A9MI-Y21

FCC ID 2A9MI-Y21

HELMET WIRELESS EARPHONE

by Shenzhen Yixi Technology Co., LTD

Grantee Code: 2A9MI   Product Code: Y21
Latest application date: 2025-09-11

FCC ID Device Details

FCC ID2A9MI-Y21
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2A9MI
Product CodeY21
Applicant BusinessShenzhen Yixi Technology Co., LTD 🇨🇳
Equipment ClassHELMET WIRELESS EARPHONE
Test FirmGuangdong Asia Hongke Test Technology Limited

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzClass II permissive change or modification of presently authorized equipment2025-09-11
2402-2480 MHzOriginal Equipment2025-04-11

Exhibits

DocumentTypeAvailableFile
User manualUsers Manual2025-04-11PDF 949.8 KB
Internal PHOTOInternal Photos2025-09-11PDF 835.4 KB
Internal photoInternal Photos2025-04-11PDF 3.2 MB
External PHOTOExternal Photos2025-09-11PDF 500.9 KB
External photoExternal Photos2025-04-11PDF 2.9 MB
Lable locationID Label/Location Info2025-04-11PDF 89.3 KB
Test Setup photoTest Setup Photos2025-09-11PDF 253.8 KB
Test Setup PhotosTest Setup Photos2025-04-11PDF 217.8 KB
AiTSZ-250826013FW1_FCC Test Report_BTTest Report2025-09-11PDF 2.9 MB
AiTSZ-250319106FW1_FCC Test Report_BTTest Report2025-04-11PDF 2 MB
Antenna specificationTest Report2025-04-11PDF 2.3 MB
Appendix RF test data for BTTest Report2025-04-11PDF 5.5 MB
US agentAttestation Statements2025-09-11PDF 134.6 KB
USA-CoveredEquipmentLetter-Combined_V1.1Attestation Statements2025-09-11PDF 215.9 KB
USA-CoveredEquipmentLetter-Combined_V1.1Attestation Statements2025-04-11PDF 118.7 KB
CIIPC Request letter -FCCCover Letter(s)2025-09-11PDF 201.7 KB
USA-ConfidentialityRequestLetter_V0.1Cover Letter(s)2025-04-11PDF 102.8 KB
AiTSZ-250826013FW2_FCC RF EXPOSURERF Exposure Info2025-09-11PDF 447.7 KB
AiTSZ-250319106FW2_FCC RF EXPOSURERF Exposure Info2025-04-11PDF 316.6 KB
Block diagram Metadata onlyBlock DiagramPDF 144.9 KB
Schematic Metadata onlySchematicsPDF 102.3 KB
Operation Description Metadata onlyOperational DescriptionPDF 120.5 KB
USA-DueDigilenceLetter_V0.1_33633 Metadata onlyOperational DescriptionPDF 139.7 KB

Application Information

Application ID98wSGUcO6/75hP8WEGi9Xw==
Final Action Date2025-09-11
Application PurposeClass II permissive change or modification of presently authorized equipment
Applicant FRN0033155482
ModelY21
Frequency Range2402-2480 MHz
Equipment ClassDSS - Part 15 Spread Spectrum Transmitter
Device DescriptionHELMET WIRELESS EARPHONE
Responsible PartyQisong Wang, 373899330@qq.com , +86-13423817655
Test FirmCoin Tang, Guangdong Asia Hongke Test Technology Limited, coin.tang@aitek.org.cn , 86-755-23096763
TCB Emailo.kneip@kl-certification.de
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
98wSGUcO6/75hP8WEGi9Xw==2025-09-11Class II permissive change or modification of presently authorized equipment
DavtMmQYCYBD/P8ev8r+xw==2025-04-11Original Equipment

Equipment Authorization

FrequencyOutput
2402-2480 MHz0.0017000

Grants

TCB Grant - Application DavtMmQYCYBD/P8ev8r+xw==

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: 04/11/2025

Application Dated: 04/11/2025
Shenzhen Yixi Technology Co., LTD
Second Floor, Building B, Area A
Longquan Science Park, Dalang Huaxing Road
Longhua District, Shenzhen City,
China
 
Attention: Qisong Wang ,

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:  2A9MI-Y21
Name of Grantee:  Shenzhen Yixi Technology Co., LTD
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: HELMET WIRELESS EARPHONE
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0017  

Output Power listed is peak conducted.

TCB Grant - Application 98wSGUcO6/75hP8WEGi9Xw==

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: 09/11/2025

Application Dated: 09/11/2025
Shenzhen Yixi Technology Co., LTD
Second Floor, Building B, Area A
Longquan Science Park, Dalang Huaxing Road
Longhua District, Shenzhen City,
China
 
Attention: Qisong Wang ,

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:  2A9MI-Y21
Name of Grantee:  Shenzhen Yixi Technology Co., LTD
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: HELMET WIRELESS EARPHONE
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0017  

Output Power listed is peak conducted. CIIPC due to update the production number of the battery.