FCC ID 2BB8U-WS8475
Wireless Transceiver Module
by Chengdu Silent Smart Technology Co., Ltd.
Grantee Code: 2BB8U Product Code: WS8475
Latest application date: 2026-06-14
FCC ID Device Details
| FCC ID | 2BB8U-WS8475 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BB8U |
| Product Code | WS8475 |
| Applicant Business | Chengdu Silent Smart Technology Co., Ltd. 🇨🇳 |
| Equipment Class | Wireless Transceiver Module |
| Test Firm | Shenzhen LGT Test Service Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 902.75-926.75 MHz | Original Equipment | 2026-06-14 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2026-06-14 | PDF 911.9 KB |
| Internal Photos | Internal Photos | 2026-06-14 | PDF 299.3 KB |
| External Photos | External Photos | 2026-06-14 | PDF 501.8 KB |
| Label Information | ID Label/Location Info | 2026-06-14 | PDF 54.3 KB |
| Test Setup Photos | Test Setup Photos | 2026-06-14 | PDF 196.6 KB |
| Antenna Report | Test Report | 2026-06-14 | PDF 728 KB |
| Test Report | Test Report | 2026-06-14 | PDF 2.9 MB |
| Attestation Statements of US Agent for Service of Process, 2.911(d)(7) | Attestation Statements | 2026-06-14 | PDF 652.8 KB |
| Attestation of Covered Equipment, 2.911(d)(5)(i)(ii) | Attestation Statements | 2026-06-14 | PDF 767.1 KB |
| Agent Authorization Letter Template | Cover Letter(s) | 2026-06-14 | PDF 574 KB |
| Modular Approval Request | Cover Letter(s) | 2026-06-14 | PDF 1.9 MB |
| Short & Long Term Confidentiality Request | Cover Letter(s) | 2026-06-14 | PDF 778.4 KB |
| RF Exposure Report | RF Exposure Info | 2026-06-14 | PDF 320.2 KB |
| BLOCK Metadata only | Block Diagram | PDF 142 KB | |
| SCH Metadata only | Schematics | PDF 491.7 KB | |
| Operational Description Metadata only | Operational Description | PDF 24.7 KB |
Application Information
| Application ID | qKY8wWy7vT1uWaMiOxgmaA== |
|---|---|
| Final Action Date | 2026-06-14 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0034052233 |
| Model | WS8475 |
| Frequency Range | 902.75-926.75 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Wireless Transceiver Module |
| Responsible Party | Sheng Liguo, shengliguo777@163.com  , 18382150460 |
| Technical Contact | Chengdu Silent Smart Technology Co., Ltd., shengliguo777@163.com |
| Non-Technical Contact | Yangyang Xu, HOPEK CORPORATION INC, HopekPeter@gmail.com  |
| Test Firm | Wen Wen, Shenzhen LGT Test Service Co., Ltd., qa@lgt-cert.com  , 0755-89668180 |
| TCB Email | anezam@qai.org  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Single Modular Approval |
| 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 |
|---|---|---|
| qKY8wWy7vT1uWaMiOxgmaA== | 2026-06-14 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 902.75-926.75 MHz | 0.017 | 15C |
Grants
TCB Grant - Application qKY8wWy7vT1uWaMiOxgmaA==
| 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: 06/14/2026 Application Dated: 06/12/2026 |
| Chengdu Silent Smart Technology Co., Ltd. |
| 303-7, Floor 3, Building 12, No.38, South |
| Jinke Road, Jinniu Hi-tech Industrial Park, |
| Chengdu, Sichuan, China |
| Attention: Sheng Liguo , |
| 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: | 2BB8U-WS8475 |
| Name of Grantee: | Chengdu Silent Smart Technology Co., Ltd. |
| Equipment Class: | Digital Transmission System |
| Notes: | Wireless Transceiver Module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 902.75 - 926.75 | 0.017 |
| Single Modular Approval. Power listed is the maximum conducted output power. The antennas used with this transmitter must be installed to provide a minimum separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter, except in accordance with FCC multi- transmitter product procedures. End-users must be provided with operating procedures for satisfying RF exposure compliance. |