2A4L3-BLEYC02Water Quality Monitor

JiNan Huiquan Electronic Co., Ltd.. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 [April 7, 2026] U.S. Agent Designation [JiNan Huiquan Electronic Co., Ltd..] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought FCC ID: 2A4L3-BLEYC02 Name and company of U.S. agent: [GLOCERTS TECHNOLOGY INC] Physical U.S. address of agent: [19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507] FRN of U.S. agent: [0036339737] Email address of U.S. agent: [[email protected]] Telephone of U.S.agent: (626) 588-8039 [GLOCERTS TECHNOLOGY INC] acknowledges their obligation to accept service of process on behalf of [JiNan Huiquan Electronic Co., Ltd..]. [JiNan Huiquan Electronic Co., Ltd..] with the FRN [0031981996] accepts its obligation to maintain an agent for service of process in the United States for no less than 1 year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission- related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. Sincerely, Signature Signature [Minqing Ying] [Huiying Fan] [General manager] [Director] [JiNan Huiquan Electronic Co., Ltd..] [GLOCERTS TECHNOLOGY INC]

JiNan Huiquan Electronic Co., Ltd.. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: JiNan Huiquan Electronic Co., Ltd.. Address: Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China. Product Name: Water Quality Monitor FCC ID: 2A4L3-BLEYC02 Model(s): BLE-YC02, WF-1, WF-2, WF-3, WF-5, WF-6, TY-11, TY-22, TY-33, TY-55, TY-66, BLE-RB01, BLE-CL100, BLE-CL200, BLE-CL300, BLE-9908TP, BLE-9909TP, BLE-9910TP, BLE-C600TP, BLE-CL100TP, BLE-CL100S, YK-FL05A, YK-FL05E, YK-S03E, YK-S03F, GX-CL7A, GX-CL7B, GX-SL5, GX-SL5A, WF-05, WF-06, WF-07, YK-07A, YK-05A, YK-6 ProA, YK-6 Proe, YK-06E, YK-06S, GX-3188, GX-3188A, GX-3188C, GX-3188E, UMR-SL05, UMR-SL05A, UI-SL05A, UMR-SL07, UMR-SL07A, UMR-3188A, New-3188, SZ-SL07, SZ-SL07A, SZ-3188, SZ-3188A, SZ-3188-7, WIFI-YL01-1, WIFI-YL01, YY-1099G-W, YY-1099Y-W 2.911(d)(5)(i) Equipment Type We, [JiNan Huiquan Electronic Co., Ltd..] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Minqing Ying Date: 2026.04.07 Title and Company name: General manager / JiNan Huiquan Electronic Co., Ltd.. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 JiNan Huiquan Electronic Co., Ltd.. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

JiNan Huiquan Electronic Co., Ltd.. 2.911 (d)(5)(ii) Applicant Attestation v1.2 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: JiNan Huiquan Electronic Co., Ltd.. Address: Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China. Product Name: Water Quality Monitor FCC ID: 2A4L3-BLEYC02 Model(s): BLE-YC02, WF-1, WF-2, WF-3, WF-5, WF-6, TY-11, TY-22, TY-33, TY-55, TY-66, BLE-RB01, BLE-CL100, BLE-CL200, BLE-CL300, BLE-9908TP, BLE-9909TP, BLE-9910TP, BLE-C600TP, BLE-CL100TP, BLE-CL100S, YK-FL05A, YK-FL05E, YK-S03E, YK-S03F, GX-CL7A, GX-CL7B, GX-SL5, GX-SL5A, WF-05, WF-06, WF-07, YK-07A, YK-05A, YK-6 ProA, YK-6 Proe, YK-06E, YK-06S, GX-3188, GX-3188A, GX-3188C, GX-3188E, UMR-SL05, UMR-SL05A, UI-SL05A, UMR-SL07, UMR-SL07A, UMR-3188A, New-3188, SZ-SL07, SZ-SL07A, SZ-3188, SZ-3188A, SZ-3188-7, WIFI-YL01-1, WIFI-YL01, YY-1099G-W, YY-1099Y-W 2.911(d)(5)(ii) Applicant filing We, [JiNan Huiquan Electronic Co., Ltd..] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Minqing Ying Date: 2026.04.07 Title and Company name: General manager / JiNan Huiquan Electronic Co., Ltd.. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 JiNan Huiquan Electronic Co., Ltd.. 2.911 (d)(5)(ii) Applicant Attestation v1.2 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

JiNan Huiquan Electronic Co., Ltd.. Agent Authorization Company: JiNan Huiquan Electronic Co., Ltd.. Address: Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China. Product Name: Water Quality Monitor Model Number(s): BLE-YC02, WF-1, WF-2, WF-3, WF-5, WF-6, TY-11, TY-22, TY-33, TY-55, TY-66, BLE-RB01, BLE-CL100, BLE-CL200, BLE-CL300, BLE- 9908TP, BLE-9909TP, BLE-9910TP, BLE-C600TP, BLE-CL100TP, BLE-CL100S, YK-FL05A, YK-FL05E, YK-S03E, YK-S03F, GX-CL7A, GX-CL7B, GX-SL5, GX- SL5A, WF-05, WF-06, WF-07, YK-07A, YK-05A, YK-6 ProA, YK-6 Proe, YK-06E, YK-06S, GX-3188, GX-3188A, GX-3188C, GX-3188E, UMR-SL05, UMR-SL05A, UI-SL05A, UMR-SL07, UMR-SL07A, UMR-3188A, New-3188, SZ-SL07, SZ- SL07A, SZ-3188, SZ-3188A, SZ-3188-7, WIFI-YL01-1, WIFI-YL01, YY-1099G-W, YY-1099Y-W Product Description: Water Quality Monitor We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: April 7, 2026 Name: Minqing Ying Title: General manager Company: JiNan Huiquan Electronic Co., Ltd..

JiNan Huiquan Electronic Co., Ltd.. Model Difference Data：April 7, 2026 Product description: Water Quality Monitor Model name: BLE-YC02, WF-1, WF-2, WF-3, WF-5, WF-6, TY-11, TY-22, TY-33, TY-55, TY-66, BLE-RB01, BLE-CL100, BLE-CL200, BLE-CL300, BLE-9908TP, BLE-9909TP, BLE-9910TP, BLE-C600TP, BLE-CL100TP, BLE-CL100S, YK- FL05A, YK-FL05E, YK-S03E, YK-S03F, GX-CL7A, GX-CL7B, GX-SL5, GX- SL5A, WF-05, WF-06, WF-07, YK-07A, YK-05A, YK-6 ProA, YK-6 Proe, YK- 06E, YK-06S, GX-3188, GX-3188A, GX-3188C, GX-3188E, UMR-SL05, UMR-SL05A, UI-SL05A, UMR-SL07, UMR-SL07A, UMR-3188A, New-3188, SZ-SL07, SZ-SL07A, SZ-3188, SZ-3188A, SZ-3188-7, WIFI-YL01-1, WIFI- YL01, YY-1099G-W, YY-1099Y-W Trade Name: N/A FCC ID: 2A4L3-BLEYC02 All the model are the same circuit and RF module, only for model name. Regards Sincerely Client’s signature : Client’s name / title : Minqing Ying（General manager） Contact information / address Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China.

JiNan Huiquan Electronic Co., Ltd.. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: April 7, 2026 Subject; Request for Confidentiality FCC ID: 2A4L3-BLEYC02 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Minqing Ying Title: General manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: BLE-YC02 External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 4

FCC ID LABEL: Label Location: FCC ID: 2A4L3-BLEYC02 Model No.: BLE-YC02

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 5 Model: BLE-YC02 Internal Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 5 ANT Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 5 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 5 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 5

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2A4L3-BLEYC02 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 2.4G WIFI 802.11n(H T20)&241 2 16±1 17 50.1187 1.3152 (1.19dBi) 0.01312 1 Pass

AntennaSpecification 1.AntennaInformation Manufacturer Hangzhou Tuya Information Technology Co., Ltd Room701, Building3, More Center, No.87 GuDun Road310000 HangzhouPEOPLE'S REPUBLIC OF CHINA ModelZSU TypePCB antenna Gain1.36 dBi 2.RadiationPattern 2400M: 2450MHz 2500MHz 3. Gaintableof Antenna 3.PCB photo Frequency/ MHzEfficiency/ %Gain/dB 240030.48-0.19 241033.110.12 242035.810.53 243037.410.67 244038.280.84 245037.840.78 246039.361.19 247040.091.36 248039.451.21 249037.581.14

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 63 TEST REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. The tested sample(s) and the sample information are provided by the applicant. The authenticity, accuracy, and completeness of the provided information are the sole responsibility of the applicant. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The result decision rules of our laboratory are based solely on the direct comparison between the actual measured values of test results and the standard limits, without considering the measurement uncertainty.“” indicates the testing items were fulfilled by subcontracted lab. “” indicates the items are not in CNAS accreditation scope. Test item description: Water Quality Monitor FCC ID: 2A4L3-BLEYC02 Trademark(s): N/A Model/Type reference: BLE-YC02, For other series models, refer to Section 4.1. Applicant’s name: JiNan Huiquan Electronic Co., Ltd.. Address: Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China. Manufacturer: JiNan Huiquan Electronic Co., Ltd.. Address: Building 120-101, Xinmao Qilu Science and Technology Park, NO. 299, Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China. Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Mar. 24, 2026 Sample tested Date: Mar. 24, 2026 to Apr.10 , 2026 Issue Date: Apr. 10 , 2026 Report No.: CTB26032408205RF01 Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2020 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26032408205RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 63 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 3 2. TEST SUMMARY ................................................................... 4 3. MEASUREMENT UNCERTAINTY ..................................................... 5 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 6 4.1 Product Information .................................................................... 6 4.2 Test Setup Configuration ............................................................... 6 4.3 Support Equipment .................................................................... 6 4.4 Channel List .......................................................................... 7 4.5 Test Mode ............................................................................ 7 4.6 Test Environment ...................................................................... 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 8 5.1 Test Facility ........................................................................... 8 5.2 Test Instrument Used .................................................................. 8 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION ................................................... 14 7.1 Block Diagram Of Test Setup .......................................................... 14 7.2 Limit ................................................................................ 14 7.3 Test procedure ....................................................................... 15 7.4 Test Result .......................................................................... 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 38 8.1 Block Diagram Of Test Setup .......................................................... 38 8.2 Limit ................................................................................ 38 8.3 Test procedure ....................................................................... 38 8.4 Test Result .......................................................................... 39 9. CONDUCTED OUTPUT POWER ..................................................... 47 9.1 Block Diagram Of Test Setup .......................................................... 47 9.2 Limit ................................................................................ 47 9.3 Test procedure ....................................................................... 47 9.4 Test Result .......................................................................... 47 10. 6DB OCCUPIED BANDWIDTH ....................................................... 50 10.1 Block Diagram Of Test Setup ......................................................... 50 10.2 Limit ............................................................................... 50 10.3 Test procedure ...................................................................... 50 10.4 Test Result ......................................................................... 51 11. POWER SPECTRAL DENSITY ...................................................... 56 11.1 Block Diagram Of Test Setup ..................................................…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: BLE-YC02 Radiated Emission Below 1G Above 1G