Active Subwoofer — by Ultimea Technology (Shenzhen) Limited
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FCC ID 2A9OO-U412FB
Device Details
FCC ID 2A9OO-U412FB Grantee Code 2A9OO Product Code U412FB Applicant Ultimea Technology (Shenzhen) Limited Address 20th Floor,Building4,Tianan Cloud Park, Bantian St.,Longgang District,, Shenzhen, N/A, 518000, China Equipment Class DSS - Part 15 Spread Spectrum Transmitter Device Description Active Subwoofer Application Purpose Original Equipment Grant Date 2026-09-10 Frequency Range 2402-2480 MHz Operating Frequencies
Frequency Range Application Purpose Final Action Date
2402.00000000–2480.00000000 MHz
Original Equipment
2026-09-10
Exhibits (17)
View on FCC.gov ↗
Document Type Available File
Agent attestation letter
Attestation Statements
2026-09-10
ADOBE ACROBAT PDF 126.6 KB
Covered equipment letter
Attestation Statements
2026-09-10
ADOBE ACROBAT PDF 255.3 KB
Due digilence letter
Attestation Statements
2026-09-10
ADOBE ACROBAT PDF 260.7 KB
Block diagram
Block Diagram
ADOBE ACROBAT PDF 297.4 KB
Confidentiality request letter
Cover Letter(s)
2026-09-10
ADOBE ACROBAT PDF 253.6 KB
Letter of declaration model difference
Cover Letter(s)
2026-09-10
ADOBE ACROBAT PDF 77.9 KB
External photos
External Photos
2026-09-10
ADOBE ACROBAT PDF 1.2 MB
Label and label location
ID Label/Location Info
2026-09-10
ADOBE ACROBAT PDF 142.3 KB
Internal photos
Internal Photos
2026-09-10
ADOBE ACROBAT PDF 920.2 KB
Operation description
Operational Description
ADOBE ACROBAT PDF 147.5 KB
RF exposure evaluation
RF Exposure Info
2026-09-10
ADOBE ACROBAT PDF 400.4 KB
Schematic
Schematics
ADOBE ACROBAT PDF 222.6 KB
Antenna information
Test Report
2026-09-10
ADOBE ACROBAT PDF 638 KB
Appendix test data BT
Test Report
2026-09-10
ADOBE ACROBAT PDF 2.9 MB
Test Report BT
Test Report
2026-09-10
ADOBE ACROBAT PDF 972 KB
Test setup photos
Test Setup Photos
2026-09-10
ADOBE ACROBAT PDF 555.8 KB
User manual
Users Manual
2026-09-10
ADOBE ACROBAT PDF 4.6 MB
Application Information
Application ID jwYWI9YiQRFvd6C/Rhrxcg== Final Action Date 2026-09-10 Application Purpose Original Equipment Model U412FB Frequency Range 2402-2480 MHz Equipment Class DSS - Part 15 Spread Spectrum Transmitter Device Description Active Subwoofer Responsible Party Yoyo Yu, Yoyo.yu@substanbo.com, 0755-23762801 Non-Technical Contact Monica Lin, Ultimea Inc., yoyo.yu@ultimea.com, (888)598-8875 Test Firm Jack Ai, Shenzhen Huaxia Testing Technology Co., Ltd, szcqa@cqa-cert.com, +8613902988375 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 Yes 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
jwYWI9YiQRFvd6C/Rhrxcg==
2026-09-10
Original Equipment
Equipment Authorization
Frequency Output Tolerance Emission Designator Rules
2402.00000000–2480.00000000 MHz
0.0051000
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: 09/10/2026
Ultimea Technology (Shenzhen) Limited
20th Floor,Building4,Tianan Cloud Park,
Bantian St.,Longgang District,
Shenzhen, 518000
China
Attention: Yoyo Yu ,
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:
2A9OO-U412FB
Name of Grantee:
Ultimea Technology (Shenzhen) Limited
Equipment Class:
Part 15 Spread Spectrum Transmitter
Notes:
Active Subwoofer
Grant Notes
FCC Rule Parts
Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
15C
2402.0
-
2480.0
0.0051
Power listed is maximum peak conducted output power. The product must be installed such that its antenna(s) can provide a separation distance of at least 20 cm from all persons and must not transmit simultaneously with any other transmitter, except in accordance with FCC multi-transmitter product procedures or as described in this filing.
Regulatory Testing from Start to Certificate
