FCC ID 2A53H-SQ400C
Water Leakage Detector
by Dongguan Daying Electronics Technology Co.,LTD
Grantee Code: 2A53H Product Code: SQ400C
Latest application date: 2025-08-08
FCC ID Device Details
| FCC ID | 2A53H-SQ400C |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2A53H |
| Product Code | SQ400C |
| Applicant Business | Dongguan Daying Electronics Technology Co.,LTD 🇨🇳 |
| Equipment Class | Water Leakage Detector |
| Test Firm | Shenzhen CTL Testing Technology Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2025-08-08 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2025-08-08 | PDF 1.2 MB |
| Internal Photos of EUT | Internal Photos | 2025-08-08 | PDF 341.8 KB |
| External Photos of EUT | External Photos | 2025-08-08 | PDF 654 KB |
| FCC-label | ID Label/Location Info | 2025-08-08 | PDF 690.4 KB |
| Test Setup Photos of the EUT | Test Setup Photos | 2025-08-08 | PDF 1.6 MB |
| Antenna Specification | Test Report | 2025-08-08 | PDF 548 KB |
| CTL2506252041-WF01 15.247 BLE | Test Report | 2025-08-08 | PDF 2.6 MB |
| CTL2506252041-WF01_Appendix of BLE | Test Report | 2025-08-08 | PDF 2 MB |
| CTL2506252041-WF02 15.247 2.4G Wi-Fi | Test Report | 2025-08-08 | PDF 2.9 MB |
| CTL2506252041-WF02_Appendix of 2.4GWi-Fi | Test Report | 2025-08-08 | PDF 5.2 MB |
| USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | 2025-08-08 | PDF 125.6 KB |
| USA-LocalRepLetter_V1.1 - 2A53H-SQ400C | Attestation Statements | 2025-08-08 | PDF 88.3 KB |
| Declaration Letter of Model Difference | Cover Letter(s) | 2025-08-08 | PDF 82.9 KB |
| FCC Declaration of Disable WLAN Channel 12 and 13 | Cover Letter(s) | 2025-08-08 | PDF 103.8 KB |
| USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | 2025-08-08 | PDF 105.2 KB |
| CTL2506252041-WFH RF exposure FCC 20cm | RF Exposure Info | 2025-08-08 | PDF 515.1 KB |
| Block Diagram Metadata only | Block Diagram | PDF 152 KB | |
| Schematic Metadata only | Schematics | PDF 664.2 KB | |
| Operational Description Metadata only | Operational Description | PDF 338.4 KB | |
| USA-DueDigilenceLetter_V0.1 Metadata only | Operational Description | PDF 79.2 KB |
Application Information
| Application ID | DvMpyjGM1cH/2Lmba1R2vQ== |
|---|---|
| Final Action Date | 2025-08-08 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0032178279 |
| Model | SQ400C |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Water Leakage Detector |
| Responsible Party | FeiMei Huang, 497526162@qq.com  , 0769-82553706 |
| Test Firm | Tracy Qi, Shenzhen CTL Testing Technology Co., Ltd., qihui@ctl-lab.com  , 86-755-89486194 |
| 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 |
| Grant Deferral | No |
| Modular Equipment | Does not apply |
| Composite Device | No |
| Composite Part | No |
| Cognitive Radio | No |
| Authorization Waiver | No |
| Authorization Waiver Approved | No |
| Section 5301 Certification | Yes |
| Related OET Knowledge DataBase Inquiry | No |
| Grant Comments | Output Power listed is peak conducted. This device supports 802.11b, 802.11g and 802.11n with a 20 MHz bandwidth mode. RF exposure compliance is addressed for 1.1310 and 2.1091 MPE limits. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons. End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. |
Applications
| Application ID | Date | Purpose |
|---|---|---|
| DvMpyjGM1cH/2Lmba1R2vQ== | 2025-08-08 | Original Equipment |
Equipment Authorization
| Frequency | Output |
|---|---|
| 2402-2480 MHz | 0.0012 |
| 2412-2462 MHz | 0.0421 |
Grants
TCB Grant - Application DvMpyjGM1cH/2Lmba1R2vQ==
| 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: 08/08/2025 Application Dated: 08/08/2025 |
| Dongguan Daying Electronics Technology Co.,LTD |
| 5th Floor, D, Futai High-Tech Park, |
| No.8 Qingfeng South Road,Tangxia Town, |
| Dongguan City, China |
| Attention: FeiMei Huang , |
| 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: | 2A53H-SQ400C |
| Name of Grantee: | Dongguan Daying Electronics Technology Co.,LTD |
| Equipment Class: | Digital Transmission System |
| Notes: | Water Leakage Detector |
| 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 | 0.0421 |
| Output Power listed is peak conducted. This device supports 802.11b, 802.11g and 802.11n with a 20 MHz bandwidth mode. RF exposure compliance is addressed for 1.1310 and 2.1091 MPE limits. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons. End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. |