2BUVX-LSN0100Spark Card

FCC Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. The use distance is not more than 5mm.

Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Apr. 13, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BUVX-LSN0100 Shanghai RevelSpark Technologies Co.,Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Yi zhao Title: Manager Address: Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Tel.: +86-15618981688 Email: [email protected]

Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Apr. 13, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: 2BUVX-LSN0100 Product Name: Spark Card This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Yi zhao Title: +86-15618981688 Address: Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Tel.: +86-15618981688 Email: [email protected] Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: Apr. 13, 26 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2BUVX-LSN0100 [Shanghai RevelSpark Technologies Co.,Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, [AOGES CO., LIMITED] (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. [AOGES CO., LIMITED] ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: AOGES CO., LIMITED FRN: 0033947847 Address: 1624 Market St, Ste 226, #30327 Denver CO, 80202 USA Signature: Contact Person: XIAOYAN LAl Tel: +1 303 623 1940 Email: [email protected] Applicant Company Name: Shanghai RevelSpark Technologies Co.,Ltd. FRN: 0038010039 Address: Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Signature: Contact Person: Yi zhao Tel: +86-15618981688 Email: [email protected]

Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Apr. 13, 26 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BUVX-LSN0100 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Sincerely, Printed Name: Yi zhao Title: Manager Address: Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Tel.: Manager Email: [email protected]

Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Apr. 13, 26 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BUVX-LSN0100 I, the undersigned, hereby authorize (SHENZHEN STS TEST SERVICES CO.,LTD.) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (SHENZHEN STS TEST SERVICES CO.,LTD.) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with (Shanghai RevelSpark Technologies Co.,Ltd.). We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, Printed Name: Yi zhao Title: Manager Address: Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Tel.: +86-15618981688 Email: [email protected]

Page 1 of 5 Report No.: STS2602053 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Photo 1 Photo 2 Page 2 of 5 Report No.: STS2602053 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2602053 Photo 5 Photo 6 Page 4 of 5 Report No.: STS2602053 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2602053 Photo 9

Label FCC ID: 2BUVX-LSN0100

Page 1 of 4 Report No.: STS2602053 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Photo 1 Photo 2 BT Antenna Page 2 of 4 Report No.: STS2602053 Photo 3 Photo 4 Page 3 of 4 Report No.: STS2602053 Photo 5 Photo 6 Page 4 of 4 Report No.: STS2602053 Photo 7 Photo 8

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2602053H01 Issued for Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Name: Spark Card Brand Name: lynse Model Name: LSN-0100 Series Model(s): N/A FCC ID: 2BUVX-LSN0100 Test Standards: FCC 47CFR §2.1093 Page 2 of 8 Report No.: STS2602053H01 TEST REPORT Applicant’s Name ................. : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Manufacturer's Name ........... : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Description Product Name ........................ : Spark Card Brand Name .......................... : lynse Model Name .......................... : LSN-0100 Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D01 Interim General RF Exposure Guidance v06 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 10 Feb. 2026 Date (s) of performance of tests ............. : 10 Feb. 2026 ~ 23 Mar. 2026 Date of Issue .......................................... : 23 Mar. 2026 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 8 Report No.: STS2602053H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Page 4 of 8 Report No.: STS2602053H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 23 Mar. 2026 STS2602053H01 ALL Initial Issue Page 5 of 8 Report No.: STS2602053H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name Spark Card Brand Name lynse Model Name LSN-0100 Series Model(s) N/A Model Difference N/A Product Description The EUT is Spark Card Operation Frequency: BLE: 2402~2480 MHz 2.4G WLAN: 802.11b/g/n 20: 2412~2462 MHz Modulation Type: BLE: GFSK 2.4G WLAN: 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QAM,64-Q AM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-Q AM Antenna gain: 0.54dBi Antenna Designation: PIFA Power Rating Input: DC 5V, 0.5A Adapter N/A Battery Model: 204843 Brand: ST Rated Voltage: 3.8V Charge Limit Voltage: 4.35V Capacity: 470mAh Hardware Version 0.03 Software Version v1.0.4 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 8 Report No.: STS2602053H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Page 7 of 8 Report No.: STS2602053H01 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] • [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz. Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Page 8 of 8 Report No.: STS2602053H01 2.3 TEST RESULT Maximum measured transmitter power. Worst Case RF Function output power (dBm) Max Tune Up Power (dBm) Max Tune Up Power (dBm) BLE 2.03 2±1 3 2.4G WLAN 8.93 8±1 9 Evaluation Result Mode Frequency Antenna Distance RF output power including tune up (dBm) SAR Test Exclusion Threshold SAR Test Exclusion Estimated SAR GHz mm dBm mw GFSK(BlE) 2.44 5 3 1.995 0.623 Yes / 802.11n20 (2.4G WLAN) 2.462 5 9 7.943 2.493 Yes / Note: 1. Remark: The worst case gain of the antenna is 0.54dBi. 2. Threshold at which no SAR required is 0.623≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. 3. Threshold at which no SAR required is 2.493≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

Customer睿德鑫 Project 2403 Antenna Revision A0 Prepared by 17550061372 Checked by 15993920520 Date 2025.3.6 Purpose This report is to measure the performance of antenna for 2403 The antenna operating frequency at 2400-2500MHz All test data are showed as below. Content 2. Product Overview & Dimension ● 3.OTA Data 深 圳 合 翊 讯 科 技 有 限 公 司 02 01 03 . 1. Test system Sequence Number Test Item equipment S parameter VSWR Agilent 5071C & Agilent 5071B OTA Test TRP& TIS Agilent 8960 & CMW500 STIMO Gain & Efficiency Gain & Efficiency SATIMO Agilent 5071C 深 圳 合 翊 讯 科 技 有 限 公 司 1.TestSystem 2.Product Overview & Dimension 深 圳 合 翊 讯 科 技 有 限 公 司 Test Equipment： R&S CMW500 Test Condition： 3D chamber BandChannel TRP(dBm)TIS(dBm) BLE 0-8.56-80.07 39 -7.62 -79.21 78 -7.19-79.32 深 圳 合 翊 讯 科 技 有 限 公 司 3.OTA Data 深 圳 合 翊 讯 科 技 有 限 公 司 4.Test Result 深 圳 合 翊 讯 科 技 有 限 公 司 5.2D/3D

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2602053W01 Issued for Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Name: Spark Card Brand Name: lynse Model Name: LSN-0100 Series Model(s): N/A FCC ID: 2BUVX-LSN0100 Test Standards: FCC Part15.247 Page 2 of 72 Report No.: STS2602053W01 TEST REPORT Applicant’s Name ................. : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Manufacturer's Name ........... : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Description Product Name ........................ : Spark Card Brand Name ........................... : lynse Model Name .......................... : LSN-0100 Series Model(s) .................... : N/A Standards ............................. : FCC Part 15.247 Test Procedure........................: ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 10 Feb. 2026 Date (s) of performance of tests ............. : 10 Feb. 2026 ~ 23 Mar. 2026 Date of Issue .......................................... : 23 Mar. 2026 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 72 Report No.: STS2602053W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 TEST SOFTWARE AND POWER LEVEL 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 13 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 RADIATED EMISSION MEASUREMENT 18 4. DUTY CYCLE 30 4.1 TEST STANDARD 30 4.2 TEST PROCEDURE 30 4.3 DEVIATION FROM STANDARD 30 4.4 TEST SETUP 30 4.6 TEST RESULTS 30 5. CONDUCTED SPURIOUS & BAND EDGE EMISSION 31 5.1 LIMIT 31 5.2 TEST PROCEDURE 31 5.3 DEVIATION FROM STANDARD 31 5.4 TEST SETUP 31 5.5 EUT OPERATION CONDITIONS 31 5.6 TEST RESULTS 31 6. POWER SPECTRAL DENSITY TEST 32 6.1 LIMIT 32 6.2 TEST PROCEDURE 32 6.3 DEVIATION FROM STANDARD 32 6.4 TEST SETUP 32 6.5 EUT OPERATION CONDITIONS 32 6.6 TEST RESULTS 32 Page 4 of 72 Report No.: STS2602053W01 Table of Contents Page 7. BANDWIDTH TEST 33 7.1 LIMIT 33 7.2 TEST PROCEDURE 33 7.3 DEVIATION FROM STANDARD 33 7.4 TEST SETUP 33 7.5 EUT OPERATION CONDITIONS 33 7.6 TEST RESULTS 33 8. PEAK OUTPUT POWER TEST 34 7.1 LIMIT 34 8.2 TEST PROCEDURE 34 8.3 DEVIATION FROM STANDARD 34 8.4 TEST SETUP 34 8.5 EUT OPERATION CONDITIONS 34 8.6 TEST RESULTS 34 9. ANTENNA REQUIREMENT 35 9.1 STANDARD REQUIREMENT 35 9.2 EUT ANTENNA 35 APPENDIX 1-TEST DATA 36 DUTY CYCLE 36 MAXIMUM PEAK CONDUCTED OUTPUT POWER 42 -6DB BANDWIDTH 43 MAXIMUM POWER SPECTRAL DENSITY LEVEL 49 BAND EDGE 55 CONDUCTED RF SPURIOUS EMISSION 62 APPENDIX 2-PHOTOS OF TEST SETUP 72 Page 5 of 72 Report No.: STS2602053W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 23 Mar. 2026 STS2602053W01 ALL Initial Issue Page 6 of 72 Report No.: STS2602053W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted Band Edge Emission PASS -- Part 15.247(d)/ part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 72 Report No.: STS2602053W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 8 of 72 Report No.: STS2602053W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name Spark Card Brand Name lynse Model Name LSN-0100 Series Model(s) N/A Model Diffe…

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The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2602053W02 Issued for Shanghai RevelSpark Technologies Co.,Ltd. Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Name: Spark Card Brand Name: lynse Model Name: LSN-0100 Series Model(s): N/A FCC ID: 2BUVX-LSN0100 Test Standards: FCC Part15.247 Page 2 of 69 Report No.: STS2602053W02 TEST REPORT Applicant’s Name ................. : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Manufacturer's Name .......... : Shanghai RevelSpark Technologies Co.,Ltd. Address ................................. : Room 1901, 19th Floor, Block A, No. 391 Guiping Road, Xuhui District, Shanghai, China Product Description Product Name ....................... : Spark Card Brand Name .......................... : lynse Model Name .......................... : ... : LSN-0100 Series Model(s) .................... : N/A Test Standards ..................... : FCC Part15.247 Test Procedure ...................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the IC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ..................... : 10 Feb. 2026 Date (s) of performance of tests ............. : 10 Feb. 2026 ~ 23 Mar. 2026 Date of Issue .......................................... : 23 Mar. 2026 Test Result.............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 69 Report No.: STS2602053W02 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 TEST SOFTWARE AND POWER LEVEL 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.6 EQUIPMENTS LIST 12 3. EMC EMISSION TEST 13 3.1 CONDUCTED EMISSION MEASUREMENT 13 3.2 TEST PROCEDURE 14 3.3 TEST SETUP 14 3.4 EUT OPERATING CONDITIONS 14 3.5 TEST RESULTS 15 4. RADIATED EMISSION MEASUREMENT 17 4.1 RADIATED EMISSION LIMITS 17 4.2 TEST PROCEDURE 19 4.3 TEST SETUP 20 4.4 EUT OPERATING CONDITIONS 20 4.5 FIELD STRENGTH CALCULATION 21 4.6 TEST RESULTS 22 5. DUTY CYCLE 35 5.1 TEST STANDARD 35 5.2 TEST PROCEDURE 35 5.3 DEVIATION FROM STANDARD 35 5.4 TEST SETUP 35 5.6 TEST RESULTS 35 6. CONDUCTED SPURIOUS & BAND EDGE EMISSION 36 6.1 LIMIT 36 6.2 TEST PROCEDURE 36 6.3 TEST SETUP 36 Page 4 of 69 Report No.: STS2602053W02 Table of Contents Page 6.4 EUT OPERATION CONDITIONS 36 6.5 TEST RESULTS 36 7. POWER SPECTRAL DENSITY TEST 37 7.1 LIMIT 37 7.2 TEST PROCEDURE 37 7.3 TEST SETUP 37 7.4 EUT OPERATION CONDITIONS 37 7.5 TEST RESULTS 37 8. BANDWIDTH TEST 38 8.1 LIMIT 38 8.2 TEST PROCEDURE 38 8.3 TEST SETUP 38 8.4 EUT OPERATION CONDITIONS 38 8.5 TEST RESULTS 38 9. PEAK OUTPUT POWER TEST 39 9.1 LIMIT 39 9.2 TEST PROCEDURE 39 9.3 TEST SETUP 39 9.4 EUT OPERATION CONDITIONS 39 9.5 TEST RESULTS 39 10. ANTENNA REQUIREMENT 40 10.1 STANDARD REQUIREMENT 40 10.2 EUT ANTENNA 40 APPENDIX 1-TEST DATA 41 DUTY CYCLE 41 MAXIMUM PEAK CONDUCTED OUTPUT POWER 45 -6DB BANDWIDTH 49 MAXIMUM POWER SPECTRAL DENSITY LEVEL 53 BAND EDGE 57 CONDUCTED RF SPURIOUS EMISSION 62 APPENDIX 2- EUT TEST PHOTO 69 Page 5 of 69 Report No.: STS2602053W02 Revision History Rev. Issue Date Report No. Effect Page Contents 00 23 Mar. 2026 STS2602053W02 ALL Initial Issue Page 6 of 69 Report No.: STS2602053W02 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/ Part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- Note: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 69 Report No.: STS2602053W02 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 8 of 69 Report No.: STS2602053W02 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF …

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Page 1 of 2 FCC ID: 2BUVX-LSN0100 Setup photo AC Conduction RF Conduction Page 2 of 2 FCC ID: 2BUVX-LSN0100 RE (Below 1GHz) RE (Above 1GHz)