Wireless Earphone — by Dongguan Shengyu Acoustics Technology Co., Ltd.
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FCC ID 2BYAU-MX1
Device Details
FCC ID 2BYAU-MX1 Grantee Code 2BYAU Product Code MX1 Applicant Dongguan Shengyu Acoustics Technology Co., Ltd. Address Room 810, No. 303, Guancheng Section, Dongcheng Middle Road, Guancheng Street, Dongguan City, Guangdong Province, N/A, N/A, China Equipment Class DSS - Part 15 Spread Spectrum Transmitter Device Description Wireless Earphone Application Purpose Original Equipment Grant Date 2026-09-18 Frequency Range 2402-2480 MHz Operating Frequencies
Frequency Range Application Purpose Final Action Date
2402.00000000–2480.00000000 MHz
Original Equipment
2026-09-18
Exhibits (21)
View on FCC.gov ↗
Document Type Available File
Agent attestation letter
Attestation Statements
2026-09-18
ADOBE ACROBAT PDF 184.6 KB
Covered equipment letter
Attestation Statements
2026-09-18
ADOBE ACROBAT PDF 257.7 KB
Due digilence letter
Attestation Statements
2026-09-18
ADOBE ACROBAT PDF 249.9 KB
Block diagram
Block Diagram
ADOBE ACROBAT PDF 80.9 KB
Confidentiality request letter
Cover Letter(s)
2026-09-18
ADOBE ACROBAT PDF 257.8 KB
Letter of declaration model difference
Cover Letter(s)
2026-09-18
ADOBE ACROBAT PDF 206.9 KB
External photos
External Photos
2026-09-18
ADOBE ACROBAT PDF 1.2 MB
Label and label location
ID Label/Location Info
2026-09-18
ADOBE ACROBAT PDF 193 KB
Internal photos
Internal Photos
2026-09-18
ADOBE ACROBAT PDF 1.7 MB
Operation description
Operational Description
ADOBE ACROBAT PDF 106.7 KB
RF exposure evaluation
RF Exposure Info
2026-09-18
ADOBE ACROBAT PDF 214.1 KB
Schematic
Schematics
ADOBE ACROBAT PDF 113.2 KB
Antenna information
Test Report
2026-09-18
ADOBE ACROBAT PDF 495.3 KB
Appendix test data BT part 1
Test Report
2026-09-18
ADOBE ACROBAT PDF 3.5 MB
Appendix test data BT part 2
Test Report
2026-09-18
ADOBE ACROBAT PDF 3.9 MB
Appendix test data BT part 3
Test Report
2026-09-18
ADOBE ACROBAT PDF 3.1 MB
Appendix test data BT part 4
Test Report
2026-09-18
ADOBE ACROBAT PDF 4.2 MB
Appendix test data BT part 5
Test Report
2026-09-18
ADOBE ACROBAT PDF 1.8 MB
Test Report BT
Test Report
2026-09-18
ADOBE ACROBAT PDF 1.7 MB
Test setup photos
Test Setup Photos
2026-09-18
ADOBE ACROBAT PDF 455.2 KB
User manual
Users Manual
2026-09-18
ADOBE ACROBAT PDF 1.4 MB
Application Information
Application ID WxuM+FRl6SehBFyKvc59ig== Final Action Date 2026-09-18 Application Purpose Original Equipment Model MX1 Frequency Range 2402-2480 MHz Equipment Class DSS - Part 15 Spread Spectrum Transmitter Device Description Wireless Earphone Responsible Party Chris Liu, bonnie.cai@btf-lab.com, 15820209177 Non-Technical Contact Huiying Fan, GLOCERTS TECHNOLOGY INC, huiying.fan@glocerts.com, (626) 588-8039 Test Firm Ryan CJ, BTF Testing Lab (Shenzhen) Co., Ltd., Ryan.cj@btf-lab.com, 86-755-23146130 TCB Email o.kneip@kl-certification.de TCB Scope A4: UNII devices & low power transmitters using spread spectrum techniques Long-Term Confidentiality Yes Short-Term Confidentiality No Modular Equipment Does not apply Composite Device No Cognitive Radio No Authorization Waiver No Authorization Waiver Approved No Section 5301 Certification Yes Related OET Knowledge DataBase Inquiry No Applications (1)
Application ID Date Purpose
WxuM+FRl6SehBFyKvc59ig==
2026-09-18
Original Equipment
Equipment Authorization
Frequency Output Tolerance Emission Designator Rules
2402.00000000–2480.00000000 MHz
0.0057000
15C
Grants
TCB
GRANT OF EQUIPMENT
AUTHORIZATIONTCB
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: 09/18/2026
Dongguan Shengyu Acoustics Technology Co., Ltd.
Room 810, No. 303, Guancheng Section,
Dongcheng Middle Road, Guancheng Street
Dongguan City, Guangdong Province,
China
Attention: Chris Liu ,
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:
2BYAU-MX1
Name of Grantee:
Dongguan Shengyu Acoustics Technology Co., Ltd.
Equipment Class:
Part 15 Spread Spectrum Transmitter
Notes:
Wireless Earphone
Grant Notes
FCC Rule Parts
Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
15C
2402.0
-
2480.0
0.0057
Power listed is maximum peak conducted output power. This filing meets the SAR threshold exclusion set forth in KDB 447498 and therefore can be used in mobile/portable configurations. The antenna used for this transmitter must not transmit simultaneously with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures.
Regulatory Testing from Start to Certificate
