2ACSVSWB1Solar Plug-SWB1 RS485/RS232/TTL To Wi-Fi+BLE Collector

Shanghai High-Flying Electronics Technology Co., Ltd. Covered Equipment Certification Attestation Letter 6/30/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2ACSVSWB1 Shanghai High-Flying Electronics Technology Co., Ltd.(“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shanghai High-Flying Electronics Technology Co., Ltd.(“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Shanghai High-Flying Electronics Technology Co., Ltd.(“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Xiaojun Ma Title: Certification Manager Company Name: Shanghai High-Flying Electronics Technology Co., Ltd. Date: 6/30/2026

Prepared by: Liu Wei Approved by: Xu Kai Eurofins TA Technology (Shanghai) Co., Ltd. Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China TEL: +86-021-50791141/2/3 FAX: +86-021-50791141/2/3-8000 EMC TEST REPORT Applicant Shanghai High-Flying Electronics Technology Co., Ltd. FCC ID 2ACSVSWB1 Product Solar Plug-SWB1 RS485/RS232/TTL To Wi-Fi+BLE Collector Brand HF Model Solar Plug-SWB1 Report No. EFTA26060010-IE-02-E1 Issue Date June 23, 2026 Eurofins TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in FCC Code CFR47 Part15B (2025)/ ANSI C63.4-2014. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Test Report Report No.: EFTA26060010-IE-02-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 2 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Table of Contents 1 Test Laboratory ................................................................................................................................. 4 1.1 Notes of the Test Report ............................................................................................................ 4 1.2 Test Facility ................................................................................................................................ 4 1.3 Testing Location......................................................................................................................... 4 2 General Description of Equipment Under Test ................................................................................. 5 2.1 Applicant and Manufacturer Information ................................................................................... 5 2.2 General Information ................................................................................................................... 5 2.3 Applied Standards ..................................................................................................................... 6 2.4 Test Mode .................................................................................................................................. 7 3 Test Case Results ............................................................................................................................. 8 3.1 Radiated Emission ..................................................................................................................... 8 3.2 Conducted Emission ................................................................................................................ 13 4 Uncertainty Measurement ............................................................................................................... 16 5 Main Test Instruments ..................................................................................................................... 17 6 The EUT Appearance ...................................................................................................................... 18 7 Test Setup Photos ........................................................................................................................... 19 Test Report Report No.: EFTA26060010-IE-02-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 3 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Summary of measurement results Number Test Case Clause in FCC Rules Conclusion 1 Radiated Emission FCC Part15.109, ANSI C63.4-2014 PASS 2 Conducted Emission FCC Part15.107, ANSI C63.4-2014 PASS Date of Testing: June 5, 2026 ~ June 9, 2026 Date of Sample Received: June 1, 2026 Note: 1. The conformity assessment in this report is based on a direct comparison of the test results with the limits by Eurofins TA Technology (Shanghai) Co., Ltd., without considering measurement uncertainty. Test Report Report No.: EFTA26060010-IE-02-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 4 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 1 Test Laboratory 1.1 Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2 Test Facility FCC (Designation number: CN1179, Test Firm Registration Number: 446626) Eurofins TA Technology (Shanghai) Co., Ltd. has been listed on the US Federal Communications Commission list of test facilities recognized to perform measurements. A2LA (Certificate Number: 3857.01) Eurofins TA Technology (Shanghai) Co., Ltd. has been listed by American Association for Laboratory Accreditation to perform measurement. 1.3 Testing Location Company: Eurofins TA Technology (Shanghai) Co., Ltd. Address: Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: https://www.eurofins.com/electrical-and-electronics E-mail: [email protected] Test Report Report No.: EFTA26060010-IE-02-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 5 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 2 General Description of Equipment Under Test 2.1 Applicant and Manufacturer Information Applicant Shanghai High-Flying Electronics Technology Co., Ltd. Applicant address Roo…

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