FCC ID 2AHYH-HFD-W28
White Noise Machine
by Shenzhen Hi-FiD Electronics Tech Co., Ltd
Grantee Code: 2AHYH Product Code: HFDW28
Latest application date: 2026-08-25
FCC ID Device Details
| FCC ID | 2AHYH-HFD-W28 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2AHYH |
| Product Code | HFDW28 |
| Applicant Business | Shenzhen Hi-FiD Electronics Tech Co., Ltd 🇨🇳 |
| Related Domains |  hi-fid.com.cn |
| Equipment Class | White Noise Machine |
| Test Firm | Shenzhen Toby Technology Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-08-25 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manaul | Users Manual | 2026-08-25 | PDF 3.6 MB |
| Internal Photos | Internal Photos | 2026-08-25 | PDF 2 MB |
| External Photos | External Photos | 2026-08-25 | PDF 1.2 MB |
| Label&Location | ID Label/Location Info | 2026-08-25 | PDF 762.7 KB |
| Test setup photos | Test Setup Photos | 2026-08-25 | PDF 1.1 MB |
| Antenna Spec | Test Report | 2026-08-25 | PDF 5.2 MB |
| Appendix A for BT RF Test Data(FCC) | Test Report | 2026-08-25 | PDF 5 MB |
| TBR-C-202607-0097-2 Test Report BT(FCC) | Test Report | 2026-08-25 | PDF 1.8 MB |
| USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | 2026-08-25 | PDF 612.3 KB |
| USA-LocalRepLetter_V1.1 | Attestation Statements | 2026-08-25 | PDF 391.9 KB |
| USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | 2026-08-25 | PDF 515 KB |
| TBR-C-202607-0097-5 RF Exposure( FCC) | RF Exposure Info | 2026-08-25 | PDF 1 MB |
| Block Digram Metadata only | Block Diagram | PDF 172.7 KB | |
| Schematic Metadata only | Schematics | PDF 518.5 KB | |
| Operation Description Metadata only | Operational Description | PDF 290.3 KB | |
| USA-DueDigilenceLetter_V0.1 Metadata only | Operational Description | PDF 168.7 KB |
Application Information
| Application ID | c6x7SUyhPG/DuZzmOG/McQ== |
|---|---|
| Final Action Date | 2026-08-25 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0025480856 |
| Model | HFD-W28 |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | White Noise Machine |
| Responsible Party | David Hao, Hi-FiD@Hi-FiD.COM.CN , 0755-29976182 |
| Non-Technical Contact | Yifan Hao, Corix Technology Co., Ltd., corixtechnology@gmail.com  , (518) 961-8960 |
| 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 | 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 |
|---|---|---|
| c6x7SUyhPG/DuZzmOG/McQ== | 2026-08-25 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.0008 | 15C |
Grants
TCB Grant - Application c6x7SUyhPG/DuZzmOG/McQ==
| 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: 08/25/2026 Application Dated: 08/25/2026 |
| Shenzhen Hi-FiD Electronics Tech Co., Ltd |
| 4F,B7 Building, Hengfeng industrial City, |
| Hezhou Village, Xixiang Town, Bao'an District, |
| Shenzhen, China |
| Attention: David Hao , 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: | 2AHYH-HFD-W28 |
| Name of Grantee: | Shenzhen Hi-FiD Electronics Tech Co., Ltd |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | White Noise Machine |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0008 |
| 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. |