2BRBH-ECH0A01echolens camera

NISD, LLC dba echolens. (31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Sep. 24, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID:2BRBH-ECH0A01 NISD, LLC dba echolens (“the applicant”) 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: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Tel.: 562 400 5362 Email: [email protected]

1 | P a g e NISD, LLC dba echolens. (31 Belmont Ave, Long beach CA, 90803, USA,90001 9008) Attestation Statements To: Federal Communications Commission Date: (2025/9/24) 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: [2BRBH-ECH0A01] Product Name: [echolens camera] 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: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Tel.: 562 400 5362 Email: [email protected] Evaluation regarding to the Covered List Software: Compliance Evaluation Process Results 2 | P a g e Methodology 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) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

NISD, LLC dba echolens U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: NISD, LLC dba echolens FRN: 0037331444 Contact Name: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Telephone No: 562 400 5362 Email: [email protected] This letter is to confirm that we (“NISD, LLC dba echolens’’) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2025-09-22 Signed by (Printed Name/Title): Zachary Snyder/Manager The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company Name: NISD, LLC dba echolens FRN: 0037331444 Contact Name: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Telephone No: 562 400 5362 Email: [email protected] Applicant Signature: Date: 2025-09-22 Signed by (Printed Name/Title): Zachary Snyder/Manager

NISD, LLC dba echolens. (31 Belmont Ave, Long beach CA, 90803, USA,90001 9008) ((2025/9/4) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BRBH-ECH0A01 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  BOM 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. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of (up to 180) days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired.  User Manual Sincerely, (Signature) Applicant Signature Printed Name: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Tel.: 562 400 5362 Email: [email protected]

NISD, LLC dba echolens (31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 (2025/9/18) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BRBH-ECH0A01 I, the undersigned, hereby authorize (Shenzhen BCTC Testing Co., Ltd) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (Shenzhen BCTC Testing 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 (NISD, LLC dba echolens). 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, (Signature) Applicant Signature Printed Name: Zachary Snyder Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Tel.: 562 400 5362 Email: [email protected]

Report No.: BCTC2508532058E Product Name: echolens camera Test Model: ECH-A01 External Photos Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E

Report No.: BCTC2508532058E Product Name: echolens camera Test Model: ECH-A01 Label location

Report No.: BCTC2508532058E Product Name: echolens camera Test Model: ECH-A01 Internal Photos Report No.: BCTC2508532058E ANT Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E Report No.: BCTC2508532058E

FCC ID:2BRBH-ECH0A01 Portable device According to § 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. According to KDB447498 D01 General RF Exposure Guidance V06 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. We use 5mm as separation distance to calculate. Maximum measured transmitter power: WIFI Channel Freq. (MHz) Max Transmit Power (dBm) Max tune-up power (dBm) Result calculation 1-g SAR 802.11b 2412 8.86 8 1.96 3.0 2437 7.73 7 1.56 3.0 2462 8.96 8 1.98 3.0 802.11g 2412 8.52 8 1.96 3.0 2437 8.56 8 1.97 3.0 2462 7.63 7 1.57 3.0 802.11n20 2412 8.37 8 1.96 3.0 2437 7.14 7 1.56 3.0 2462 7.54 7 1.57 3.0 802.11n40 2422 8.09 8 1.96 3.0 2437 8.8 8 1.97 3.0 2452 8.18 8 1.98 3.0 Conclusion: For the max result : 0.20≤ 3.0 for 1-g SAR extremity SAR, No SAR is required.

深圳市鑫恒阳科技有限公司 u概要（Summary） u项目信息（Project information） u测试设备（Test Equipment） u机台图片 Machine image u实际测试图片（test photo） u主板匹配电路（Main board matching circuit） u天线位置（ANT Location） uReturn Loss&VSWR u辐射方向图（Radiation pattern） u无源效率、增益测试报告（Passive efficiency and gain test report） u环境处理（Environmental treatment） u总结（Summarize） 目录（List） 鑫恒阳天线测试数据报告 u项目信息（Project information） 客户名CUSTOMER NAME: 林升科技 项目名PRODUCT NAME:X92 研发（R&D）: 肖谭平 日期DATE:2025/07/24 1.有源测试：支持2.3.4.5G制式多模式测量 NB-loT, eMTC,CAT- 1,Bluetooth1-5 ，WIFI802.11 abgn,可测TRP TIS 2.无源测试：可测试增益，效率 3.TWS耳机测试头模 全套人头手 一. 测试设备（Test Equipment） 深圳市鑫恒阳科技有限公司 深圳市鑫恒阳科技有限公司 二. 机台图片 Machine image 深圳市鑫恒阳科技有限公司 Definition of darkroom coordinate axis: H: XY axis E1: XZ axis E2: YZ axis 三. 实际测试图片（test photo） H面 E1面 E2面 深圳市鑫恒阳科技有限公司 四. 主板匹配电路（Main board matching circuit） 1.8nh 0.5pf Antenna 3.9NH 0Ω GND GND RF Switch GND 深圳市鑫恒阳科技有限公司 五.天线位置（ANT Location） X7陶瓷 六.Return Loss&VSWR 深圳市鑫恒阳科技有限公司 七.辐射方向图（Radiation pattern） 深圳市鑫恒阳科技有限公司 2400MHZ 七.辐射方向图（Radiation pattern） 深圳市鑫恒阳科技有限公司 2450MHZ 七.辐射方向图（Radiation pattern） 深圳市鑫恒阳科技有限公司 2500MHZ 八.无源效率、增益（Passive efficiency and gain ） 深圳市鑫恒阳科技有限公司 2400MHZ-2500MHZ Frequency (MHz) Gain (dBi) Efficiency (%) 2400 -1.11 31.54 2410 -0.42 36.05 2420 -0.15 38.40 2430 0.30 43.96 2440 0.23 43.24 2450 0.57 45.45 2460 0.50 44.93 2470 -0.16 41.58 2480 -0.77 41.24 2490 -1.22 39.38 2500 -1.65 36.61 九.环境处理 深圳市鑫恒阳科技有限公司 机器原环境，未做处理 深圳市鑫恒阳科技有限公司 十.总结（Summarize） 总结： 1，以上数据是最新改板天线测试所得。 谢 谢 如有疑问，请电话沟通 17347352784 [email protected] 深圳市鑫恒阳科技有限公司

No.：BCTC/RF-ICT-005 Page: 1 of 74 Edition：C.0 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2508532058E Applicant: NISD, LLC dba echolens Product Name: echolens camera Test Model: ECH-A01 Tested Date: 2025-08-04 to 2025-09-22 Issued Date: 2025-08-19 Report No.: BCTC2508532058E No.：BCTC/RF-ICT-005 Page: 2 of 74 Edition：C.0 FCC ID: 2BRBH-ECH0A01 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. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: echolens camera Trademark: echolens Model/Type Reference: ECH-A01 Prepared For: NISD, LLC dba echolens Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Manufacturer: NISD, LLC dba echolens Address: 31 Belmont Ave, Long beach CA, 90803, USA,90001 9008 Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2025-08-04 Sample Tested Date: 2025-08-04 to 2025-09-22 Report No.: BCTC2508532058E Test Standards: FCC Part15.247 ANSI C63.10-2020 Test Results: PASS Remark: This is WIFI-2.4GHz band radio test report. Tested by: Approved by: Brave Zeng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2508532058E No.：BCTC/RF-ICT-005 Page: 3 of 74 Edition：C.0 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 11 5. Test Facility And Test Instrument Used ............................................................... 12 5.1 Test Facility ......................................................................................................... 12 5.2 Test Instrument Used .......................................................................................... 12 6. Conducted Emissions .......................................................................................... 14 6.1 Block Diagram Of Test Setup .............................................................................. 14 6.2 Limit .................................................................................................................... 14 6.3 Test procedure .................................................................................................... 14 6.4 EUT operating Conditions ................................................................................... 14 6.5 Test Result .......................................................................................................... 15 7. Radiated Emissions ............................................................................................. 17 7.1 Block Diagram Of Test Setup .............................................................................. 17 7.2 Limit .................................................................................................................... 18 7.3 Test procedure .................................................................................................... 19 7.4 EUT Operating Conditions .................................................................................. 20 7.5 Test Result .......................................................................................................... 20 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 27 8.1 Block Diagram Of Test Setup .............................................................................. 27 8.2 Limit .................................................................................................................... 27 8.3 Test procedure .................................................................................................... 28 8.4 EUT Operating Conditions .................................................................................. 28 8.5 Test Result .......................................................................................................... 29 9. Power Spectral Density Test ............................................................................... 31 9.1 Block Diagram Of Test Setup .............................................................................. 31 9.2 Limit .................................................................................................................... 31 9.3 Test procedure .................................................................................................... 31 9.4 EUT Operating Conditions .................................................................................. 31 9.5 Test Result .......................................................................................................... 32 10. Band…

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Report No.: BCTC2508532058E Product Name: echolens camera Test Model: ECH-A01 TEST SETUP PHOTOGRAPHS Conducted emissions Radiated Measurement Photos Report No.: BCTC2508532058E ----------------The end----------------