FCC ID 2BXX4-ENJOYING
Bluetooth Sleep Mask w/ Silent Velcro
by Matrix Source Industrial Co Ltd
Grantee Code: 2BXX4 Product Code: ENJOYING
Latest application date: 2026-09-30
FCC ID Device Details
| FCC ID | 2BXX4-ENJOYING |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BXX4 |
| Product Code | ENJOYING |
| Applicant Business | Matrix Source Industrial Co Ltd |
| Related Domains |  matrixsource.com.hk |
| Equipment Class | Bluetooth Sleep Mask w/ Silent Velcro |
| Test Firm | Shenzhen HTT Technology Co.,Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-09-30 |
| 2402-2480 MHz | Original Equipment | 2026-09-30 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2026-09-30 | PDF 1.2 MB |
| appendix II EUT Internal photo | Internal Photos | 2026-09-30 | PDF 620.4 KB |
| appendix II EUT External photo | External Photos | 2026-09-30 | PDF 945.8 KB |
| Label and Location | ID Label/Location Info | 2026-09-30 | PDF 219.9 KB |
| appendix I EUT Test Setup photo | Test Setup Photos | 2026-09-30 | PDF 345.7 KB |
| Antenna Specification | Test Report | 2026-09-30 | PDF 1 MB |
| Appendix RF Test Data for BLE | Test Report | 2026-09-30 | PDF 2.2 MB |
| Appendix RF Test Data for BT | Test Report | 2026-09-30 | PDF 4.7 MB |
| HTT202609045F01_Test Report-BT FCC | Test Report | 2026-09-30 | PDF 2.1 MB |
| HTT202609045F02_Test Report-BLE FCC | Test Report | 2026-09-30 | PDF 872.1 KB |
| USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | 2026-09-30 | PDF 113 KB |
| USA-LocalRepLetter_V1.1 - 2BXX4-ENJOYING | Attestation Statements | 2026-09-30 | PDF 343.3 KB |
| USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | 2026-09-30 | PDF 99.5 KB |
| HTT202609045F03_RF Exposure-info | RF Exposure Info | 2026-09-30 | PDF 375.3 KB |
| Block Diagram Metadata only | Block Diagram | PDF 79.1 KB | |
| schematic Metadata only | Schematics | PDF 357.2 KB | |
| Operation Description Metadata only | Operational Description | PDF 127.8 KB | |
| USA-DueDigilenceLetter_V0.1 Metadata only | Operational Description | PDF 149.3 KB |
Application Information
| Application ID | flw3dr2Akj2j1s6v/kyFtg== |
|---|---|
| Final Action Date | 2026-09-30 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0038830477 |
| Model | ENJOYING |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | Bluetooth Sleep Mask w/ Silent Velcro |
| Responsible Party | Wilma Hu, wilma@matrixsource.com.hk , 85225810829 |
| Non-Technical Contact | Cindy Wu, HOORAY INDUSTRY LLC, cindynewhope@gmail.com  , (626) 910-5808 |
| Test Firm | Kevin Yang, Shenzhen HTT Technology Co.,Ltd., info@httprc.com  , 86-755-23595200 |
| 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 |
|---|---|---|
| flw3dr2Akj2j1s6v/kyFtg== | 2026-09-30 | Original Equipment |
| fhLm93gu9npesX6g9IDpBA== | 2026-09-30 | Original Equipment |
Grants
TCB Grant - Application flw3dr2Akj2j1s6v/kyFtg==
| 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: 09/30/2026 Application Dated: 09/30/2026 |
| Matrix Source Industrial Co Ltd |
| Unit A&C, 9/F Gee Hing Chnag Ind |
| 16 Cheung Yue Street |
| Hong Kong, Hong Kong |
| Attention: Wilma Hu , |
| 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: | 2BXX4-ENJOYING |
| Name of Grantee: | Matrix Source Industrial Co Ltd |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | Bluetooth Sleep Mask w/ Silent Velcro |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0014 |
| Output Power listed is peak conducted. |
TCB Grant - Application fhLm93gu9npesX6g9IDpBA==
| 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: 09/30/2026 Application Dated: 09/30/2026 |
| Matrix Source Industrial Co Ltd |
| Unit A&C, 9/F Gee Hing Chnag Ind |
| 16 Cheung Yue Street |
| Hong Kong, Hong Kong |
| Attention: Wilma Hu , |
| 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: | 2BXX4-ENJOYING |
| Name of Grantee: | Matrix Source Industrial Co Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | Bluetooth Sleep Mask w/ Silent Velcro |
| 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. |