FCC ID 2BYJQ-RDX
Electronic bicycle shifter / Rear Derailleur
by Hangzhou leoseek sports technology Co.,Ltd
Grantee Code: 2BYJQ Product Code: RDX
Latest application date: 2026-10-19
FCC ID Device Details
| FCC ID | 2BYJQ-RDX |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BYJQ |
| Product Code | RDX |
| Applicant Business | Hangzhou leoseek sports technology Co.,Ltd 🇨🇳 |
| Related Domains |  leoseek.cn  picus.fi |
| Equipment Class | Electronic bicycle shifter / Rear Derailleur |
| Test Firm | CTSL Testing (Dongguan) Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-10-19 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User manual | Users Manual | 2026-10-19 | PDF 392 KB |
| Internal photos | Internal Photos | 2026-10-19 | PDF 2.4 MB |
| External photos | External Photos | 2026-10-19 | PDF 261.6 KB |
| Label and label location | ID Label/Location Info | 2026-10-19 | PDF 139.4 KB |
| Test setup photos | Test Setup Photos | 2026-10-19 | PDF 1.5 MB |
| Antenna information | Test Report | 2026-10-19 | PDF 926.2 KB |
| Test Report BT LE | Test Report | 2026-10-19 | PDF 2.4 MB |
| Agent attestation letter | Attestation Statements | 2026-10-19 | PDF 605.3 KB |
| Covered equipment letter | Attestation Statements | 2026-10-19 | PDF 267.3 KB |
| Due digilence letter | Attestation Statements | 2026-10-19 | PDF 240.5 KB |
| Confidentiality request letter | Cover Letter(s) | 2026-10-19 | PDF 270.4 KB |
| Letter of declaration model difference | Cover Letter(s) | 2026-10-19 | PDF 58.6 KB |
| RF exposure evaluation | RF Exposure Info | 2026-10-19 | PDF 336.7 KB |
| Block diagram Metadata only | Block Diagram | PDF 39.8 KB | |
| Schematic Metadata only | Schematics | PDF 104.7 KB | |
| Operation description Metadata only | Operational Description | PDF 116.6 KB |
Application Information
| Application ID | JeQ2HqHx72MOfqXyLE/g9A== |
|---|---|
| Final Action Date | 2026-10-19 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0038951448 |
| Model | RDX |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Electronic bicycle shifter / Rear Derailleur |
| Responsible Party | Yuanfu Shao, LEO@LEOSEEK.CN , +8618258471617 |
| Non-Technical Contact | Ivan Wang, Picus Advisors US LLC, ivan.wang@picus.fi , (713) 391-4488 |
| Test Firm | Liz Zhang, CTSL Testing (Dongguan) Co., Ltd., ctsl@ctsl-lab.com  , 13018606640 |
| 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 |
|---|---|---|
| JeQ2HqHx72MOfqXyLE/g9A== | 2026-10-19 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.00058 | 15C |
Grants
TCB Grant - Application JeQ2HqHx72MOfqXyLE/g9A==
| 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: 10/19/2026 Application Dated: 10/19/2026 |
| Hangzhou leoseek sports technology Co.,Ltd |
| Unit 5208, Building 5, No.4 Fengdu Road, |
| Pingyao Town, Yuhang District, |
| Hangzhou City, Zhejiang Province, China |
| Attention: Yuanfu Shao , 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: | 2BYJQ-RDX |
| Name of Grantee: | Hangzhou leoseek sports technology Co.,Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | Electronic bicycle shifter / Rear Derailleur |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.00058 |
| 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. |