FCC ID V9X-NK24Y
2.4G Transceiver module
by Circuit Design, Inc.
Grantee Code: V9X Product Code: NK24Y
Latest application date: 2025-12-23
FCC ID Device Details
| FCC ID | V9X-NK24Y |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | V9X |
| Product Code | NK24Y |
| Applicant Business | Circuit Design, Inc. 🇯🇵 |
| Related Domains |  circuitdesign.jp  saelig.com |
| Equipment Class | 2.4G Transceiver module |
| Test Firm | UL Japan, Inc. SHONAN EMC LABORATORY |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2403-2479 MHz | Class II permissive change or modification of presently authorized equipment | 2025-12-23 |
| 2403-2479 MHz | Class II permissive change or modification of presently authorized equipment | 2017-12-26 |
| 2403-2479 MHz | Original Equipment | 2015-06-25 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| 05 User Manual | Users Manual | 2025-12-23 | PDF 785.1 KB |
| User Manual | Users Manual | 2015-06-25 | PDF 247.9 KB |
| Internal Photo | Internal Photos | 2015-06-25 | PDF 121.9 KB |
| 04 External Photo | External Photos | 2025-12-23 | PDF 270.5 KB |
| 04 External Photo | External Photos | 2017-12-26 | PDF 42.1 KB |
| External Photo | External Photos | 2015-06-25 | PDF 154.1 KB |
| Label | ID Label/Location Info | 2015-06-25 | PDF 109.2 KB |
| Label location | ID Label/Location Info | 2015-06-25 | PDF 56.4 KB |
| 03 FCC Test Setup Photo_DSS | Test Setup Photos | 2025-12-23 | PDF 266.9 KB |
| 03 FCC Test Setup Photo_DSS | Test Setup Photos | 2017-12-26 | PDF 1.1 MB |
| FCC Tset Setup Photo_DSS | Test Setup Photos | 2015-06-25 | PDF 1.9 MB |
| 03 Antenna Spec-Data Sheet | Test Report | 2025-12-23 | PDF 5.6 MB |
| 03 FCC Test Report_DSS | Test Report | 2025-12-23 | PDF 853.6 KB |
| 03 FCC Test Report_DSS | Test Report | 2017-12-26 | PDF 382.1 KB |
| FCC Test Report_DSS | Test Report | 2015-06-25 | PDF 876.1 KB |
| 01 FCC 2.911(d)(5) Attestation | Attestation Statements | 2025-12-23 | PDF 141.3 KB |
| 01 FCC Agent Attestation_Agent | Attestation Statements | 2025-12-23 | PDF 46.1 KB |
| 01 FCC Agent Attestation_Applicant | Attestation Statements | 2025-12-23 | PDF 143.2 KB |
| 02 FCC Authorization Letter | Cover Letter(s) | 2025-12-23 | PDF 113.4 KB |
| 02 FCC C2PC Letter | Cover Letter(s) | 2025-12-23 | PDF 92.3 KB |
| 02 FCC Request for LTC | Cover Letter(s) | 2025-12-23 | PDF 96.4 KB |
| 02 FCC Authorization Letter | Cover Letter(s) | 2017-12-26 | PDF 289.1 KB |
| 02 FCC Class II Permissive Change Letter | Cover Letter(s) | 2017-12-26 | PDF 142.1 KB |
| 02 FCC Request for Confidentiality Letter | Cover Letter(s) | 2017-12-26 | PDF 248.8 KB |
| FCC Authorization Letter | Cover Letter(s) | 2015-06-25 | PDF 256.6 KB |
| FCC MA Letter | Cover Letter(s) | 2015-06-25 | PDF 421.9 KB |
| FCC Request for Confidentiality Letter | Cover Letter(s) | 2015-06-25 | PDF 229.3 KB |
| 03 FCC RF Exposure_DSS | RF Exposure Info | 2025-12-23 | PDF 140.9 KB |
| 03 FCC RF Exposure_DSS | RF Exposure Info | 2017-12-26 | PDF 112.8 KB |
| FCC RF Exposure_DSS | RF Exposure Info | 2015-06-25 | PDF 117.7 KB |
| (Confidential) Block Diagram Metadata only | Block Diagram | PDF 131.5 KB | |
| (Confidential) Schematics Metadata only | Schematics | PDF 99 KB | |
| (Confidential) Theory of Operation-Antenna Specification Metadata only | Operational Description | PDF 106.9 KB | |
| (Confidential) Theory of Operation-Hopping Metadata only | Operational Description | PDF 129.6 KB | |
| (Confidential) Theory of Operation-Interface Specification Metadata only | Operational Description | PDF 540.2 KB | |
| 05 Confidential_Theory of Operation_Antennas List Metadata only | Operational Description | PDF 29.1 KB | |
| 06 Confidential_Theory of Operation_Antennas Specification Metadata only | Operational Description | PDF 144.6 KB | |
| 06 LTC_Operational Description-Spec Metadata only | Operational Description | PDF 27.8 KB |
Application Information
| Application ID | 6zXJRNQXklx8wXM6W066BQ== |
|---|---|
| Final Action Date | 2025-12-23 |
| Application Purpose | Class II permissive change or modification of presently authorized equipment |
| Applicant FRN | 0017721283 |
| Model | NK24Y |
| Frequency Range | 2403-2479 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | 2.4G Transceiver module |
| Responsible Party | Koji Maruyama, support@circuitdesign.jp , 81263821010 |
| Technical Contact | Kazutaka Takeyama, UL Japan, Inc., Kazutaka.Takeyama@ul.com  , 81-463-50-6400 |
| Non-Technical Contact | Alan Lowne, Saelig Co. Inc., alan.lowne@saelig.com , 1-585-385-1750 |
| Test Firm | Akio Hayashi, UL Japan, Inc. SHONAN EMC LABORATORY, Akio.Hayashi@ul.com , 81-463-50-6400 |
| TCB Email | LST.FRE.CertNotice@ul.com |
| 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 |
|---|---|---|
| 6zXJRNQXklx8wXM6W066BQ== | 2025-12-23 | Class II permissive change or modification of presently authorized equipment |
| DutRe3k5cocZod1cEiq3qg== | 2017-12-26 | Class II permissive change or modification of presently authorized equipment |
| V0McgcD9MHas/Zzr5+p4og== | 2015-06-25 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2403-2479 MHz | 0.0013000 | 15C |
Grants
TCB Grant - Application V0McgcD9MHas/Zzr5+p4og==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Japan, Inc. 4383-326 Asama-cho Ise-shi Mie, 5160021 Japan |
Date of Grant: 06/25/2015 Application Dated: 06/25/2015 |
| Circuit Design, Inc. |
| 7557-1, Hotaka |
| Azumino, Nagano, 399-8303 Japan |
| Attention: Yukinaga Koike |
| 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: | V9X-NK24Y |
| Name of Grantee: | Circuit Design, Inc. |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 2.4G Transceiver module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2403.0 - 2479.0 | 0.0013 |
| Single Modular Approval. Output power listed is Conducted(Peak). Compliance of this device in all final host configurations is the responsibility of the Grantee. OEM integrators and end-users must be provided with specific operating instructions for satisfying RF exposure compliance. OEM integrators are instructed to ensure that the end user has no manual instructions to remove or install the device. |
EAS Grant - Application V0McgcD9MHas/Zzr5+p4og==
| COPY |
FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION |
COPY |
| Certification |
|
Circuit Design, Inc. 7557-1, Hotaka P.O. Box , Azumino, Nagano, 399-8303 Japan |
Date of Grant: 06/25/2015 Application Dated: 06/25/2015 |
| Attention: Yukinaga Koike |
| 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: | V9X-NK24Y |
| Name of Grantee: | Circuit Design, Inc. |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 2.4G Transceiver module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2403.0 - 2479.0 | 0.0013 |
| Single Modular Approval. Output power listed is Conducted(Peak). Compliance of this device in all final host configurations is the responsibility of the Grantee. OEM integrators and end-users must be provided with specific operating instructions for satisfying RF exposure compliance. OEM integrators are instructed to ensure that the end user has no manual instructions to remove or install the device. |
| Mail To: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Japan, Inc. 4383-326 Asama-cho Ise-shi Mie, 5160021 Japan |
Date of Grant: 12/26/2017 Application Dated: 12/26/2017 |
| Circuit Design, Inc. |
| 7557-1, Hotaka |
| Azumino, Nagano, 399-8303 Japan |
| Attention: Yukinaga Koike |
| 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: | V9X-NK24Y |
| Name of Grantee: | Circuit Design, Inc. |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 2.4G Transceiver module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2403.0 - 2479.0 | 0.0013 |
| Class II Permissive Change to add specific antennas described in this filing. Single Modular Approval. Output power listed is Conducted(Peak). Compliance of this device in all final host configurations is the responsibility of the Grantee. OEM integrators and end-users must be provided with specific operating instructions for satisfying RF exposure compliance. OEM integrators are instructed to ensure that the end user has no manual instructions to remove or install the device. |
EAS Grant - Application DutRe3k5cocZod1cEiq3qg==
| COPY |
FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION |
COPY |
| Certification |
|
Circuit Design, Inc. 7557-1, Hotaka P.O. Box , Azumino, Nagano, 399-8303 Japan |
Date of Grant: 12/26/2017 Application Dated: 12/26/2017 |
| Attention: Yukinaga Koike |
| 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: | V9X-NK24Y |
| Name of Grantee: | Circuit Design, Inc. |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 2.4G Transceiver module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2403.0 - 2479.0 | 0.0013 |
| Class II Permissive Change to add specific antennas described in this filing. Single Modular Approval. Output power listed is Conducted(Peak). Compliance of this device in all final host configurations is the responsibility of the Grantee. OEM integrators and end-users must be provided with specific operating instructions for satisfying RF exposure compliance. OEM integrators are instructed to ensure that the end user has no manual instructions to remove or install the device. |
| Mail To: | |||||||||||||||||||||||||||||||||||||||||||||
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 12/23/2025 Application Dated: 12/23/2025 |
| Circuit Design, Inc. |
| 7557-1, Hotaka |
| Azumino, Nagano, 399-8303 Japan |
| Attention: Koji Maruyama , |
| 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: | V9X-NK24Y |
| Name of Grantee: | Circuit Design, Inc. |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 2.4G Transceiver module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2403.0 - 2479.0 | 0.0013 |
| Class II Permissive Change to add specific antennas described in this filing. Single Modular Approval. Output power listed is Conducted(Peak). Compliance of this device in all final host configurations is the responsibility of the Grantee. OEM integrators and end-users must be provided with specific operating instructions for satisfying RF exposure compliance. OEM integrators are instructed to ensure that the end user has no manual instructions to remove or install the device. |