1. FCC ID
  2. 2AVJD
  3. 2AVJD-K520B

FCC ID 2AVJD-K520B

Wireless bluetooth headset

by Shenzhen Ruianyuan Electronic Technology Co., Ltd.

Grantee Code: 2AVJD   Product Code: K520B
Latest application date: 2025-06-18

FCC ID Device Details

FCC ID2AVJD-K520B
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2AVJD
Product CodeK520B
Applicant BusinessShenzhen Ruianyuan Electronic Technology Co., Ltd. 🇨🇳
Equipment ClassWireless bluetooth headset
Test FirmGuangdong Asia Hongke Test Technology Limited

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzOriginal Equipment2025-06-18

Exhibits

DocumentTypeAvailableFile
User manualUsers Manual2025-06-18PDF 525.8 KB
Internal PHOTOInternal Photos2025-06-18PDF 781.7 KB
External PHOTOExternal Photos2025-06-18PDF 555.2 KB
Lable locationID Label/Location Info2025-06-18PDF 139.8 KB
Test Setup photoTest Setup Photos2025-06-18PDF 324 KB
AiTSZ-250520080FW1_FCC Test Report_BTTest Report2025-06-18PDF 2.2 MB
Antenna SpecificationTest Report2025-06-18PDF 599.9 KB
Appendix RF test data for BTTest Report2025-06-18PDF 5.9 MB
US agent_2AVJD-K520BAttestation Statements2025-06-18PDF 137.5 KB
USA-CoveredEquipmentLetter-Combined_V1.1Attestation Statements2025-06-18PDF 122.4 KB
FCC Declaration Letter TWS left&RightCover Letter(s)2025-06-18PDF 472.3 KB
USA-ConfidentialityRequestLetter_V0.1Cover Letter(s)2025-06-18PDF 103.3 KB
AiTSZ-250520080FW2_FCC RF EXPOSURERF Exposure Info2025-06-18PDF 320.6 KB
Block diagram Metadata onlyBlock DiagramPDF 73.1 KB
schematic Metadata onlySchematicsPDF 16.8 KB
Operation Description Metadata onlyOperational DescriptionPDF 164.5 KB
USA-DueDigilenceLetter_V0.1 Metadata onlyOperational DescriptionPDF 151.1 KB

Application Information

Application IDG7gkFGwX0Dnt4QRxw/Cncg==
Final Action Date2025-06-18
Application PurposeOriginal Equipment
Applicant FRN0029089190
ModelK520B
Frequency Range2402-2480 MHz
Equipment ClassDSS - Part 15 Spread Spectrum Transmitter
Device DescriptionWireless bluetooth headset
Responsible PartyMeizhen Lin, 2880644089@qq.com , 13502890859
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
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
G7gkFGwX0Dnt4QRxw/Cncg==2025-06-18Original Equipment

Equipment Authorization

FrequencyOutput
2402-2480 MHz0.0048000

Grants

TCB Grant - Application G7gkFGwX0Dnt4QRxw/Cncg==

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: 06/18/2025

Application Dated: 06/18/2025
Shenzhen Ruianyuan Electronic Technology Co., Ltd.
Floor 4, building 5, tumao industrial park
hebei industrial zone, longhua district
Shenzhen,
China
 
Attention: Meizhen Lin ,

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:  2AVJD-K520B
Name of Grantee:  Shenzhen Ruianyuan Electronic Technology Co., Ltd.
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: Wireless bluetooth headset
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0048  

Output Power listed is peak conducted.