FCC ID ZDZ-CSS-M-R21
Time Attendance & Access Controller
by Chiyu Technology Co., Ltd.
Grantee Code: ZDZ Product Code: CSSMR21
Latest application date: 2025-11-28
FCC ID Device Details
| FCC ID | ZDZ-CSS-M-R21 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | ZDZ |
| Product Code | CSSMR21 |
| Applicant Business | Chiyu Technology Co., Ltd. 🇹🇼 |
| Equipment Class | Time Attendance & Access Controller |
| Test Firm | Shenzhen LCS Compliance Testing Laboratory Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 13.56 MHz | Original Equipment | 2025-11-28 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2025-11-28 | PDF 253.8 KB |
| Internal Photos | Internal Photos | 2025-11-28 | PDF 1.2 MB |
| External Photos | External Photos | 2025-11-28 | PDF 946.9 KB |
| Label and Location | ID Label/Location Info | 2025-11-28 | PDF 964.9 KB |
| Test Setup Photos | Test Setup Photos | 2025-11-28 | PDF 1.8 MB |
| Antenna Specification | Test Report | 2025-11-28 | PDF 109.8 KB |
| LCSA11045007EA_FCC Report_NFC | Test Report | 2025-11-28 | PDF 1.1 MB |
| USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | 2025-11-28 | PDF 117.8 KB |
| USA-LocalRepLetter_V1.1 -ZDZ-CSS-M-R21 | Attestation Statements | 2025-11-28 | PDF 352.5 KB |
| Declaration Letter of Model Difference | Cover Letter(s) | 2025-11-28 | PDF 77.9 KB |
| USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | 2025-11-28 | PDF 106.5 KB |
| LCSA11045007EB_RF Exposure Evaluation-FCC | RF Exposure Info | 2025-11-28 | PDF 349.6 KB |
| Block Diagram Metadata only | Block Diagram | PDF 741.4 KB | |
| Schematic Metadata only | Schematics | PDF 182.2 KB | |
| Operation Description Metadata only | Operational Description | PDF 103.4 KB | |
| USA-DueDigilenceLetter_V0.1 Metadata only | Operational Description | PDF 86.8 KB |
Application Information
| Application ID | pI2artmnLJDyuniy3q+bHg== |
|---|---|
| Final Action Date | 2025-11-28 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0020706487 |
| Model | CSS-M-R21 |
| Frequency Range | 13.56 MHz |
| Equipment Class | DXX - Part 15 Low Power Communication Device Transmitter |
| Device Description | Time Attendance & Access Controller |
| Responsible Party | Terry Zeng, chiyu_joe@163.com  , (886) 5-2325465 |
| Test Firm | Gavin Liang, Shenzhen LCS Compliance Testing Laboratory Ltd., gavin.liang@lcs-cert.com  , 0755-82591330 |
| TCB Email | o.kneip@kl-certification.de  |
| TCB Scope | A1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices |
| 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 |
|---|---|---|
| pI2artmnLJDyuniy3q+bHg== | 2025-11-28 | Original Equipment |
Equipment Authorization
| Frequency | Rules |
|---|---|
| 13.56 MHz | 15C |
Grants
TCB Grant - Application pI2artmnLJDyuniy3q+bHg==
| 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: 11/28/2025 Application Dated: 11/28/2025 |
| Chiyu Technology Co., Ltd. |
| No. 28, Jiankang 5 th St., West Dist., |
| Chiayi, 600 Taiwan |
| Attention: Terry Zeng , 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: | ZDZ-CSS-M-R21 |
| Name of Grantee: | Chiyu Technology Co., Ltd. |
| Equipment Class: | Part 15 Low Power Communication Device Transmitter |
| Notes: | Time Attendance & Access Controller |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 13.56 - 13.56 |