2A4FVLCSL640SMWH6 Head Wifi- BLE Track Lighting

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CloudyBayLightingSupplyInc 131217thStreetSuite692DenverColoradoUnitedStates80202 Tel:2812018879 Email:[email protected] CFR47§2.911(d)(5)(i)AttestationLetter AttestationLetter Date:2023-2-23 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(i)Filing FCCID:2A4FVLCSL640SMWH CloudyBayLightingSupplyInccertifiesthattheequipmentforwhichauthorizationissought isnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. Sincerely, Signature LarryLee ProductManager

CloudyBayLightingSupplyInc 131217thStreetSuite692DenverColoradoUnitedStates80202 Tel:2812018879 Email:[email protected] CFR47§2.911(d)(5)(ii)AttestationLetter AttestationLetter Date:2023-2-23 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(ii)Filing FCCID:2A4FVLCSL640SMWH CloudyBayLightingSupplyInccertifiesthatasofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredListasanentityproducing“covered”equipment. Sincerely, Signature LarryLee ProductManager

U.S.AGENTLETTEROFATTESTATION Date:2023-2-23 FEDERALCOMMUNICATIONSCOMMISSION AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(7)Filing FCCID:2A4FVLCSL640SMWH CloudyBayLightingSupplyInccertifiesthat,asofthedateofthefilingoftheapplication, CloudyBayLightingSupplyIncisourdesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID.CloudyBayLightingSupplyIncacceptstomaintainanagentfor nolessthanoneyearafterthegranteehasterminatedallmarketingandimportationorthe conclusionofanyCommission-relatedproceedinginvolvingtheequipment. CloudyBayLightingSupplyIncaccepts,asofthedateofthefilingoftheapplication,the obligationofthedesignatedU.S.agentforserviceofprocessfortheabovereferencedFCC ID. DesignatedU.S.AgentandApplicantInformation: Name:CloudyBayLightingSupplyInc Address:131217thStreetSuite692DenverColoradoUnitedStates80202 FRN:0031957897 Tel.:2812018879 Email:[email protected] Signedby(printedname):LarryLee Signature:

CloudyBayLightingSupplyInc 131217thStreetSuite692DenverColoradoUnitedStates80202 Tel:2812018879 Email:[email protected] QA-FR-170-B7/29/2014 FCCAuthorization Date:2023-2-23 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorization Towhomitmayconcern: We,CloudyBayLightingSupplyInc,theundersigned,herebyauthorizesShenzhen AccurateTechnologyCo.,Ltd.toactonitsbehalfinallmattersrelatingtoapplicationfor Equipmentauthorization,includingthesigningofalldocumentsrelatingtothesematters. AllactscarriedoutbyShenzhenAccurateTechnologyCo.,Ltd.onourbehalfshallhavethe sameeffectasourownaction. We,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits, thatincludesFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988, 21U.S.C.862. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant. SincerelyYours, Signature: LarryLee ProductManager

Cloudy Bay Lighting Supply Inc 1312 17th Street Suite 692 Denver Colorado United States 80202 Tel: 281 201 8879 Email: [email protected] FCC Confidential Authorization Date: 2023-2-23 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2A4FVLCSL640SMWH In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Cloudy Bay Lighting Supply Inc hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description As well as short-term confidential treatment of information accompanying this application for a period of 180 days after grant is issued as outlined below: • Internal Photos • User’s Manual • External Photos • Test Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature Larry Lee Product Manager

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Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 1 of 6 Model：LCSL640SMWH Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 2 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 3 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 4 of 6 Model：LCSL640SMBK Note: the multiple model LCSL640SM** is electrical identical, only difference for appearance color , ** represent different colors, such as WH=White, BK=Black Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 5 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH External Photos Page 6 of 6

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221228-64108E-RF LABEL AND LOCATION Page 1 of 1 FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 1 of 6 Internal photos Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 2 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 3 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 4 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 5 of 6 Shenzhen Accurate Technology Co., Ltd. FCC ID: 2A4FVLCSL640SMWH Internal Photos Page 6 of 6 Antenna

Shenzhen Accurate Technology Co., Ltd. Report No.: RA221228-64108E-RF-00 Version 12: 2021-11-09 Page 13 of 75 FCC- BLE&2.4G Wi-Fi FCC §15.247 (i) & §1.1307 (b) (3) & §2.1091- MPE-Based Exemption Applicable Standard According to subpart 15.247 (i) and subpart 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. According to KDB 447498 D04 Interim General RF Exposure Guidance MPE-Based Exemption: General frequency and separation-distance dependent MPE-based effective radiated power(ERP) thresholds are in Table B.1 [Table 1 of § 1.1307(b)(1)(i)(C)] to support an exemptionfrom further evaluation from 300 kHz through 100 GHz. Ris the minimum separation distance in meters f = frequency in MHz Result Mode Frequency (MHz) Tune up conducted power Antenna Gain ERP Evaluation Distance (m) ERP Limit (mW) (dBm) (dBi)(dBd)(dBm)(mW) BLE 2402-2480 2.5 1.5 -0.65 1.85 1.531 0.2 768 Wi-Fi 2412-2462 13.0 1.5 -0.65 12.35 17.179 0.2 768 Note: 1. The tune up conducted power and antenna gain was declared by the applicant. 2. The BLE cannot transmit at the same time with the Wi-Fi. 3. 0dBd=2.15dBi To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Result: Compliant.

★ Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “ ”. Shenzhen Accurate Technology Co., Ltd. is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. 1/F., Building A, Changyuan New Material Port, Science & Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China Tel: +86 755-26503290 Fax: +86 755-26503396 Web: www.atc-lab.com Version 12: 2021-11-09 Page 1 of 73 FCC- BLE&2.4G Wi-Fi TEST REPORT Applicant Name : Cloudy Bay Lighting Supply Inc Address : 1312 17th Street Suite 692 Denver Colorado United States 80202 Report Number : RA221228-64108E-RF-00 FCC ID: 2A4FVLCSL640SMWH Test Standard (s) FCC PART 15.247 Sample Description Product Type: 6 Head Wifi- BLE Track Lighting Model No.: LCSL640SMWH Multiple Model(s) No.: LCSL640SM** Trade Mark: Cloudy Bay Date Received: 2022/12/28 Report Date: 2023/02/28 Test Result: Pass* * In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Andy Yu Candy Li EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: RA221228-64108E-RF-00 Version 12: 2021-11-09 Page 2 of 73 FCC- BLE&2.4G Wi-Fi TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 8 EUT EXERCISE SOFTWARE .......................................................................................................................................... 8 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 8 EXTERNAL I/O CABLE .................................................................................................................................................. 8 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 9 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 TEST EQUIPMENT LIST ......................................................................................................................................... 11 FCC §15.247 (I) & §1.1307 (B) (3) & §2.1091- MPE-BASED EXEMPTION ........................................................ 13 §15.203 & RSS-GEN §6.8 ANTENNA REQUIREMENT ........................................................................................ 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 15 FCC §15.207 (A) – AC LINE CONDUCTED EMISSIONS .................................................................................... 16 APPLICABLE STANDARD ............................................................................................................................................ 16 EUT SETUP ................................................................................................................................................................ 16 EMI TEST RECEIVER SETUP ....................................................................................................................................... 16 TEST PROCEDURE ...................................................................................................................................................... 16 TRANSD FACTOR & MARGIN CALCULATION.............................................................................................................. 17 TEST DATA ................................................................................................................................................................ 17 FCC §15.209, §15.205 & §15.247(D) - SPURIOUS EMISSIONS ............................................................................ 22 AP…

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Manufacturer Hangzhou Tuya Technology Co., Ltd Model Type IFA WB3S Gain 1.5dBi Gain 1.5dBi 701, Building 3, Zheshang Wealth Center, 87 Gudun Road, Xihu District, Hangzhou City Address Antenna Antenna  Measurement data Return Loss & VSWR-ANT Frequency (MHz) 2400 2450 2500 Return Loss -10.860 -10.361 -8.0654 VSW R 1.8028 1.8709 2.3064  Radiation pattern X Z Y  Radiation pattern H XY E1 XZ E2 YZ 2400 MHz ANT  Radiation pattern H XY E1 XZ E2 YZ 2450 MHz ANT  Radiation pattern H XY E1 XZ E2 YZ 2500 MHz ANT  Gain table of Antenna Frequency (MHz) AN T Efficiency (%) Peak Gain (dBi) 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 33.1 34.9833.5734.1834.5535.8336.4836.31 35.7 34.1931.61 1.371.331.171.341.501.231.291.421.031.291.14

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221228-64108E-RF Test Photos Page 1 of 2 Photo of Conducted Emission Measurement Shenzhen Accurate Technology Co., Ltd. Project No.: RA221228-64108E-RF Test Photos Page 2 of 2 Photo of Radiated Emission Measurement (Below 1G) Photo of Radiated Emission Measurement (Above 1G)