FCC ID 2BTUS-DA1
digital bluetooth amplifier
by HuiZhou LL Audio Technology Co.,Ltd
Grantee Code: 2BTUS Product Code: DA1
Latest application date: 2026-01-22
FCC ID Device Details
| FCC ID | 2BTUS-DA1 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BTUS |
| Product Code | DA1 |
| Applicant Business | HuiZhou LL Audio Technology Co.,Ltd 🇨🇳 |
| Related Domains |  act-lab.com |
| Equipment Class | digital bluetooth amplifier |
| Test Firm | Shenzhen Toby Technology Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-01-22 |
| 2402-2480 MHz | Original Equipment | 2026-01-22 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2026-01-22 | PDF 1.9 MB |
| Internal Photos | Internal Photos | 2026-01-22 | PDF 1.3 MB |
| External Photos | External Photos | 2026-01-22 | PDF 1 MB |
| Label&Location | ID Label/Location Info | 2026-01-22 | PDF 716.8 KB |
| Test setup photos | Test Setup Photos | 2026-01-22 | PDF 870.6 KB |
| Antenna Spec. | Test Report | 2026-01-22 | PDF 2.5 MB |
| Appendix A for BLE RF Test Data(FCC) | Test Report | 2026-01-22 | PDF 3.2 MB |
| Appendix B for BT RF Test Data(FCC) | Test Report | 2026-01-22 | PDF 5.8 MB |
| TBR-C-202508-0154-6 Test Report BT(FCC) | Test Report | 2026-01-22 | PDF 2.8 MB |
| TBR-C-202508-0154-61 Test Report BLE(FCC) | Test Report | 2026-01-22 | PDF 1.7 MB |
| USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | 2026-01-22 | PDF 498.5 KB |
| Us agent-2BTUS-DA1 | Attestation Statements | 2026-01-22 | PDF 2.3 MB |
| USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | 2026-01-22 | PDF 409.2 KB |
| TBR-C-202508-0154-5 RF Exposure( FCC) | RF Exposure Info | 2026-01-22 | PDF 886.7 KB |
| Block diagram Metadata only | Block Diagram | PDF 105.6 KB | |
| Schematic Metadata only | Schematics | PDF 745.2 KB | |
| Operation Description Metadata only | Operational Description | PDF 358.3 KB | |
| USA-DueDigilenceLetter_V0.1 Metadata only | Operational Description | PDF 203.9 KB |
Application Information
| Application ID | srOArWrOU30LJj47huHomg== |
|---|---|
| Final Action Date | 2026-01-22 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0037780236 |
| Model | DA1 |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | digital bluetooth amplifier |
| Responsible Party | wenyi song, aoaohtaudio@gmail.com  , 15217012707 |
| Non-Technical Contact | Scott Huber, ACT Lab LLC, shuber@act-lab.com , (562) 470-7215 |
| Test Firm | Ray Lai, Shenzhen Toby Technology Co., Ltd., Ray.LAI@cotecna.com.cn  , 086-075526509301 |
| TCB Email | o.kneip@kl-certification.de  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| 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
| Application ID | Date | Purpose |
|---|---|---|
| srOArWrOU30LJj47huHomg== | 2026-01-22 | Original Equipment |
| nKLap+GJ3B519zZWztf+zQ== | 2026-01-22 | Original Equipment |
Grants
TCB Grant - Application srOArWrOU30LJj47huHomg==
| 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: 01/22/2026 Application Dated: 01/22/2026 |
| HuiZhou LL Audio Technology Co.,Ltd |
| Room 305,Jinhui Building,No.130,Chenjiang Avenue |
| Chenjiang Sub-district,Zhongkai High-tech Zone |
| Huizhou City, Guangdong Province, China |
| Attention: wenyi song , General Manager |
| 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: | 2BTUS-DA1 |
| Name of Grantee: | HuiZhou LL Audio Technology Co.,Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | digital bluetooth amplifier |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0011 |
| Output Power listed is peak conducted. RF exposure compliance is addressed for 1.1310 and 2.1091 MPE limits. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons. End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. |
TCB Grant - Application nKLap+GJ3B519zZWztf+zQ==
| 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: 01/22/2026 Application Dated: 01/22/2026 |
| HuiZhou LL Audio Technology Co.,Ltd |
| Room 305,Jinhui Building,No.130,Chenjiang Avenue |
| Chenjiang Sub-district,Zhongkai High-tech Zone |
| Huizhou City, Guangdong Province, China |
| Attention: wenyi song , General Manager |
| 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: | 2BTUS-DA1 |
| Name of Grantee: | HuiZhou LL Audio Technology Co.,Ltd |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | digital bluetooth amplifier |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.002 |
| Output Power listed is peak conducted. RF exposure compliance is addressed for 1.1310 and 2.1091 MPE limits. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons. End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. |