X4YHABO100LED STRING LIGHT

NEXXT SOLUTIONS 2022.07.08 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: LED STRING LIGHT Trademark: N/A MODEL : NHB-O100, EC-SL100, EC-SL200, EC-SL300, EC-SL600 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Albert Mizrachi/ Vice president of product development Contact information / address: 3505 N.W 107TH AVE. MIAMI, Florida, 33178, United States

NEXXT SOLUTIONS 2022.07.08 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Albert Mizrachi / Vice president of product development Contact information / address: 3505 N.W 107TH AVE. MIAMI, Florida, 33178, United States

NEXXT SOLUTIONS Model Difference 2022-07-08 EUT NAME: LED STRING LIGHT FCC ID: X4YHABO100 MODEL : NHB-O100, EC-SL100, EC-SL200, EC-SL300, EC-SL600 All the model are the same circuit and RF module, only for model name and color. Regards Sincerely Client’s signature: Client’s name / title : Albert Mizrachi/ Vice president of product development Contact information / address: 3505 N.W 107TH AVE. MIAMI, Florida, 33178, United States

External Photos

LED STRING LIGHT FCC ID: X4YHABO100 Label location

Internal Photos Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: X4YHABO100 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=0.2m TEST RESULTS WIFI 2.4G Tune up Produce power Maximu m peak output power (dBm) Output power to antenn a (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 802.11b 13±1 14 25.12 1.35 (1.3dBi) 0.00675 1 Pass

No.：BCTC/RF-EMC-005 Page: 1 of 67 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2205849523E Applicant: NEXXT SOLUTIONS Product Name: LED STRING LIGHT Model/Type Ref.: NHB-O100 Tested Date: 2022-05-09 to 2022-05-17 Issued Date: 2022-05-17 Report No.: BCTC2205849523E No.：BCTC/RF-EMC-005 Page: 2 of 67 Edition：A.4 FCC ID: X4YHABO100 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: LED STRING LIGHT Trademark: N/A Model/Type Ref.: NHB-O100 EC-SL100, EC-SL200, EC-SL300, EC-SL600 Prepared For: NEXXT SOLUTIONS Address: 3505 N.W 107TH AVE. MIAMI, Florida, 33178, United States Manufacturer: Sungale Electronics (Shenzhen) Limited Address: No. 1302, DaHong High-Tech Park, No. 6-18, Xinhe Road, Xinqiao, BaoAn, Shenzhen 518125, CHINA Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2022-05-09 Sample tested Date: 2022-05-09 to 2022-05-17 Issue Date: 2022-05-17 Report No.: BCTC2205849523E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is WIFI-2.4GHz band radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2205849523E No.：BCTC/RF-EMC-005 Page: 3 of 67 Edition：A.4 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 .................................................................................. 15 6.5 Test Result .......................................................................................................... 16 7. Radiated Emissions ............................................................................................. 18 7.1 Block Diagram Of Test Setup .............................................................................. 18 7.2 Limit .................................................................................................................... 19 7.3 Test Procedure ................................................................................................... 20 7.4 EUT Operating Conditions .................................................................................. 21 7.5 Test Result .......................................................................................................... 22 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 29 8.1 Block Diagram Of Test Setup .............................................................................. 29 8.2 Limit .................................................................................................................... 29 8.3 Test Procedure ................................................................................................... 30 8.4 EUT operating Conditions ................................................................................... 30 8.5 Test Result .......................................................................................................... 31 9. Power Spectral Density Test ............................................................................... 33 9.1 Block Diagram Of Test Setup .............................................................................. 33 9.2 Limit .................................................................................................................... 33 9.3 Test Procedure ................................................................................................... 33 9.4 EUT Operating Conditions .................................................................................. 33 9.5 Test Result ....................…

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Report No.: BCTC2205849523E No.：BCTC/RF-EMC-005 Page: 65 of 67 Edition：A.4 16. EUT Test Setup Photographs Conducted emissions Photo Radiated Measurement Photos Report No.: BCTC2205849523E No.：BCTC/RF-EMC-005 Page: 66 of 67 Edition：A.4