FCC ID 2BYGW-DDR-156
Wireless Monitor
by Shenzhen Liangtu Technology Co., Ltd
Grantee Code: 2BYGW Product Code: DDR156
Latest application date: 2026-09-30
FCC ID Device Details
| FCC ID | 2BYGW-DDR-156 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BYGW |
| Product Code | DDR156 |
| Applicant Business | Shenzhen Liangtu Technology Co., Ltd 🇨🇳 |
| Related Domains |  liangtu-tech.com  cellt.top |
| Equipment Class | Wireless Monitor |
| Test Firm | Shenzhen NTT Testing Technology Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2412-2462 MHz | Original Equipment | 2026-09-30 |
| 5745-5825 MHz | Original Equipment | 2026-09-30 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| Label and Information | ID Label/Location Info | 2026-09-30 | PDF 118.3 KB |
| Antenna Report | Test Report | 2026-09-30 | PDF 4 MB |
| Test Report | Test Report | 2026-09-30 | PDF 4.1 MB |
| Test Report | Test Report | 2026-09-30 | PDF 4.8 MB |
| Attestation Statements of US Agent for Service of Process, 2.911(d)(7) | Attestation Statements | 2026-09-30 | PDF 574.5 KB |
| Attestation of Covered Equipment, 2.911(d)(5)(i)(ii) | Attestation Statements | 2026-09-30 | PDF 424.4 KB |
| Agent Authorization Letter Template | Cover Letter(s) | 2026-09-30 | PDF 47 KB |
| Model Difference | Cover Letter(s) | 2026-09-30 | PDF 142.9 KB |
| Short & Long Term Confidentiality Request | Cover Letter(s) | 2026-09-30 | PDF 118.9 KB |
| Software Configuration Control Declaration | Cover Letter(s) | 2026-09-30 | PDF 115.6 KB |
| RF Exposure Report | RF Exposure Info | 2026-09-30 | PDF 168 KB |
| User Manual Metadata only | Users Manual | 2027-03-29 | PDF 240.4 KB |
| Internal Photos Metadata only | Internal Photos | 2027-03-29 | PDF 1.4 MB |
| External Photos Metadata only | External Photos | 2027-03-29 | PDF 1.1 MB |
| Test Setup Photos Metadata only | Test Setup Photos | 2027-03-29 | PDF 728.4 KB |
| BLOCK Metadata only | Block Diagram | PDF 280.7 KB | |
| SCH Metadata only | Schematics | PDF 514.3 KB | |
| Operational Description Metadata only | Operational Description | PDF 417.3 KB | |
| SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES Metadata only | SDR Software/Security Info. | PDF 283.7 KB |
Application Information
| Application ID | KmM9nm7WmGaF5gC+wyVSBQ== |
|---|---|
| Final Action Date | 2026-09-30 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0038926440 |
| Model | DDR-156 |
| Frequency Range | 2412-2462 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Wireless Monitor |
| Responsible Party | ChangZe Chen, chenchangze@liangtu-tech.com , 15767836816 |
| Technical Contact | Shenzhen Liangtu Technology Co., Ltd, chenchangze@liangtu-tech.com |
| Non-Technical Contact | Thompson Lim, CELLT INC., Thompson@cellt.top |
| Test Firm | Henry Wang, Shenzhen NTT Testing Technology Co., Ltd., Quality@ntt-testing.com  , +86 134 1824 6061 |
| TCB Email | anezam@qai.org  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | Yes |
| 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 |
|---|---|---|
| KmM9nm7WmGaF5gC+wyVSBQ== | 2026-09-30 | Original Equipment |
| ItfxX4iW5kkQ4E+JO5yRjg== | 2026-09-30 | Original Equipment |
Equipment Authorization
Grants
TCB Grant - Application KmM9nm7WmGaF5gC+wyVSBQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
QAI LABORATORIES LTD 3980 North Fraser Way Burnaby, BC, V5J5K5 Canada |
Date of Grant: 09/30/2026 Application Dated: 09/30/2026 |
| Shenzhen Liangtu Technology Co., Ltd |
| 206,Building C,Zone 1, Siyuan Industrial Zone, |
| Heping Community,Fuhai Street, |
| Bao' an District,Shenzhen City, China |
| Attention: ChangZe Chen , 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: | 2BYGW-DDR-156 |
| Name of Grantee: | Shenzhen Liangtu Technology Co., Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | Wireless Monitor |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2412.0 - 2462.0 | 0.0067 |
| Power listed is the maximum conducted output power. This device contains 20 and 40 MHz signal bandwidth. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application ItfxX4iW5kkQ4E+JO5yRjg==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
QAI LABORATORIES LTD 3980 North Fraser Way Burnaby, BC, V5J5K5 Canada |
Date of Grant: 09/30/2026 Application Dated: 09/30/2026 |
| Shenzhen Liangtu Technology Co., Ltd |
| 206,Building C,Zone 1, Siyuan Industrial Zone, |
| Heping Community,Fuhai Street, |
| Bao' an District,Shenzhen City, China |
| Attention: ChangZe Chen , 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: | 2BYGW-DDR-156 |
| Name of Grantee: | Shenzhen Liangtu Technology Co., Ltd |
| Equipment Class: | Unlicensed National Information Infrastructure TX |
| Notes: | Wireless Monitor |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15E | 5180.0 - 5240.0 | 0.00469 | ||
| CC | 15E | 5745.0 - 5825.0 | 0.0057 |
| Power listed is the maximum conducted output power. This device contains 20 and 40 MHz signal bandwidth. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |