FCC ID 2BTTG-D221
D221
by Hangzhou Key to the Future Technology Co., Ltd.
Grantee Code: 2BTTG Product Code: D221
Latest application date: 2026-05-11
FCC ID Device Details
| FCC ID | 2BTTG-D221 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BTTG |
| Product Code | D221 |
| Applicant Business | Hangzhou Key to the Future Technology Co., Ltd. 🇨🇳 |
| Related Domains |  glocerts.com |
| Equipment Class | D221 |
| Test Firm | Precise Testing & Certification Co., LTD. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2412-2462 MHz | Original Equipment | 2026-05-11 |
| 13.56 MHz | Original Equipment | 2026-05-11 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| Users Manual | Users Manual | 2026-05-11 | PDF 5.2 MB |
| Internal Photos | Internal Photos | 2026-05-11 | PDF 3.7 MB |
| External Photos | External Photos | 2026-05-11 | PDF 1.9 MB |
| Label and Location | ID Label/Location Info | 2026-05-11 | PDF 254.7 KB |
| Test Setup Photos | Test Setup Photos | 2026-05-11 | PDF 485.3 KB |
| Antenna Specification | Test Report | 2026-05-11 | PDF 168 KB |
| BLE Antenna Specification | Test Report | 2026-05-11 | PDF 200.8 KB |
| Test Report | Test Report | 2026-05-11 | PDF 1.7 MB |
| Test Report BLE Part 1 | Test Report | 2026-05-11 | PDF 5.5 MB |
| Test Report BLE Part 2 | Test Report | 2026-05-11 | PDF 2.3 MB |
| Test Report WIFI Part 1 | Test Report | 2026-05-11 | PDF 5.2 MB |
| Test Report WIFI Part 2 | Test Report | 2026-05-11 | PDF 5.3 MB |
| Test Report WIFI Part 3 | Test Report | 2026-05-11 | PDF 1.7 MB |
| WIFI Antenna Specification | Test Report | 2026-05-11 | PDF 1.3 MB |
| Covered Equipment Attestation | Attestation Statements | 2026-05-11 | PDF 106.9 KB |
| U.S. Agent Designation Attestation | Attestation Statements | 2026-05-11 | PDF 145.2 KB |
| Confidentiality Letter | Cover Letter(s) | 2026-05-11 | PDF 78.8 KB |
| RF Exposure Evaluation | RF Exposure Info | 2026-05-11 | PDF 262.4 KB |
| Block Diagram Metadata only | Block Diagram | PDF 111.1 KB | |
| Schematics Metadata only | Schematics | PDF 721.6 KB | |
| Operational Description Metadata only | Operational Description | PDF 86.5 KB |
Application Information
| Application ID | EPP7H0q42pmQwemg3q8Zig== |
|---|---|
| Final Action Date | 2026-05-11 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0037775889 |
| Model | D221 |
| Frequency Range | 2412-2462 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | D221 |
| Responsible Party | Jiaqi Fu, f451405296@gmail.com  , +86-18108405211 |
| Non-Technical Contact | Huiying Fan, GLOCERTS TECHNOLOGY INC, huiying.fan@glocerts.com , 6265888039 |
| Test Firm | Yang Juan, Precise Testing & Certification Co., LTD., qc02@ptc-testing.com  , +86-13267259187 |
| TCB Email | TCB@nemko.com  |
| 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 |
|---|---|---|
| EPP7H0q42pmQwemg3q8Zig== | 2026-05-11 | Original Equipment |
| 6ti4NXP8cjeiSEQKmRp7ew== | 2026-05-11 | Original Equipment |
Equipment Authorization
Grants
TCB Grant - Application EPP7H0q42pmQwemg3q8Zig==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Nemko North America, Inc. 303 River Road Ottawa, Ontario, K1V 1H2 Canada |
Date of Grant: 05/11/2026 Application Dated: 05/08/2026 |
| Hangzhou Key to the Future Technology Co., Ltd. |
| Room 102-2, Building 1, No. 7 Jianghui South Road, |
| Changhe Subdistrict, Binjiang District, |
| Hangzhou City, Zhejiang Province, 310051 China |
| Attention: Jiaqi Fu , Quality Supervisor |
| 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: | 2BTTG-D221 |
| Name of Grantee: | Hangzhou Key to the Future Technology Co., Ltd. |
| Equipment Class: | Digital Transmission System |
| Notes: | D221 |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0012 | |||
| 15C | 2412.0 - 2462.0 | 0.02624 |
| Output power listed is conducted. This device supports 20 and 40 MHz bandwidth modes. The antenna(s) used for this transmitter must be installed to provide a 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 and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. |
TCB Grant - Application 6ti4NXP8cjeiSEQKmRp7ew==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Nemko North America, Inc. 303 River Road Ottawa, Ontario, K1V 1H2 Canada |
Date of Grant: 05/11/2026 Application Dated: 05/08/2026 |
| Hangzhou Key to the Future Technology Co., Ltd. |
| Room 102-2, Building 1, No. 7 Jianghui South Road, |
| Changhe Subdistrict, Binjiang District, |
| Hangzhou City, Zhejiang Province, 310051 China |
| Attention: Jiaqi Fu , Quality Supervisor |
| 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: | 2BTTG-D221 |
| Name of Grantee: | Hangzhou Key to the Future Technology Co., Ltd. |
| Equipment Class: | Part 15 Low Power Communication Device Transmitter |
| Notes: | D221 |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 13.56 - 13.56 |