FCC ID 2BUZB-GD31
wireless earphones
by Shenzhen Dewanghong Technology Co. LTD
Grantee Code: 2BUZB Product Code: GD31
Latest application date: 2026-03-27
FCC ID Device Details
| FCC ID | 2BUZB-GD31 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BUZB |
| Product Code | GD31 |
| Applicant Business | Shenzhen Dewanghong Technology Co. LTD 🇨🇳 |
| Related Domains |  cis-cn.net |
| Equipment Class | wireless earphones |
| Test Firm | Shenzhen Bangce Testing Technology Co. , Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-03-27 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2026-03-27 | PDF 1.6 MB |
| Internal Photographs | Internal Photos | 2026-03-27 | PDF 781.4 KB |
| External Photographs | External Photos | 2026-03-27 | PDF 821.4 KB |
| Label&Label location | ID Label/Location Info | 2026-03-27 | PDF 1.3 MB |
| Test Setup | Test Setup Photos | 2026-03-27 | PDF 615.1 KB |
| Antenna data sheet | Test Report | 2026-03-27 | PDF 886 KB |
| CISRR26031815201_47 CFR Part 15.247 | Test Report | 2026-03-27 | PDF 5.5 MB |
| USA-CoveredEquipmentLetter-Combined | Attestation Statements | 2026-03-27 | PDF 90.1 KB |
| USA-Local Rep Letter-GD31 | Attestation Statements | 2026-03-27 | PDF 48.7 KB |
| USA-Confidentiality Request Letter | Cover Letter(s) | 2026-03-27 | PDF 92.6 KB |
| CISRR26031815202_RF Exposure Evaluation FCC Part2.1093 | RF Exposure Info | 2026-03-27 | PDF 170.8 KB |
| Block Diagram Metadata only | Block Diagram | PDF 9.2 KB | |
| Schematic Metadata only | Schematics | PDF 12 KB | |
| Operation Description Metadata only | Operational Description | PDF 46.4 KB | |
| USA-DueDigilenceLetter Metadata only | Operational Description | PDF 109.9 KB |
Application Information
| Application ID | T1ULQ5yduYUK8NKoUl/jiA== |
|---|---|
| Final Action Date | 2026-03-27 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0038090999 |
| Model | GD31 |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | wireless earphones |
| Responsible Party | Sheng Qin, zengbo@cis-cn.net , +8614776020723 |
| Technical Contact | Hans Hu, Shenzhen Bangce Testing Technology Co., Ltd., o.kneip@kl-certification.de  , 15818730309 |
| Non-Technical Contact | Michael Chan, Global Product Services and Consultation LLC, cschanm@gmail.com  , (626)366-4358 |
| Test Firm | Hans Hu, Shenzhen Bangce Testing Technology Co. , Ltd., huzhiqiang@cis-cn.net , +86 0158 1873 0309 |
| 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 | No |
| 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 |
|---|---|---|
| T1ULQ5yduYUK8NKoUl/jiA== | 2026-03-27 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.00176 | 15C |
Grants
TCB Grant - Application T1ULQ5yduYUK8NKoUl/jiA==
| 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: 03/27/2026 Application Dated: 03/27/2026 |
| Shenzhen Dewanghong Technology Co. LTD |
| 6/F, Building B5, Anle Industrial Zone, |
| Hangcheng Avenue, Gushu, Xixiang, |
| Baoan District Shenzhen,, China |
| Attention: Sheng Qin , |
| 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: | 2BUZB-GD31 |
| Name of Grantee: | Shenzhen Dewanghong Technology Co. LTD |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | wireless earphones |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.00176 |
| 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. Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. |