2A8GT-R1620Sound Level Meter

SCS-F019: Confidentiality Request Letter Page 1 of 2 Rev 7.0 775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] W ebsite: https://www.cps.bureauveritas.com/ Confidentiality Request Letter Reason for Amendment (current / obsolete) Revision History Approved Date From To Initial Release (obsolete) 1.0 1.0 Nov-14-2006 Adding CFR 2.459 (obsolete) 1.0 2.0 August – 11 - 2008 Updated company template & Added text box (obsolete) 2.0 3.0 Jan-31-2012 Added IC confidentiality letter form (obsolete) 3.0 4.0 March-26-2015 Corrections to STC form. Added reference to KDB (obsolete) 4.0 5.0 Nov-19-2015 Updated company logo (current) 5.0 6.0 Jun-26-2019 Updated References and Contact Info 6.0 7.0 Aug-30-2020 SCS-F019: Confidentiality Request Letter Page 2 of 2 Rev 7.0 GLOBAL TEST SUPPLY LLC. 2023.1.4 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046-1609 Cc: Bureau Veritas Consumer Products Services Inc. 775 Montague Expressway Milpitas, CA 95035 Subject: Confidentiality Request for FCC ID: 2A8GT-R1620 Pursuant to CFR 47 sections 0.457 and 0.459, we respectfully request permanent confidential treatment of the following Exhibits accompanying this application be held confidential: Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagram Short Term External Photos Short Term Permanent i Internal Photos Short Term Permanent Operational Description/ Theory of Operation Short Term Permanent Parts List Short Term Permanent Tune-Up Procedure Short Term Permanent Schematics Short Term Test Setup Photos Short Term Permanent i User’s Manual 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. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: To avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 45 or 180 days; or for a specified date of not to exceed 180 days from the Grant Date The applicant understands that disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Client’s signature Client’s name: Chris Korres Title : Business Development Manager Contact information / address : 312 Raleigh Street, Suite 9 Wilmington, NC 28412 Permanent confidentiality may be requested in accordance with FCC KDB 726920

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 4 Report Version A Reference No.: 2210WDG0056 PHOTOGRAPHS OF THE EUT Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 4 Report Version A Reference No.: 2210WDG0056 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 4 Report Version A Reference No.: 2210WDG0056 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 4 Report Version A Reference No.: 2210WDG0056

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 4 Report Version A Reference No.: 2210WDG0056 PHOTOGRAPHS OF THE EUT Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 4 Report Version A Reference No.: 2210WDG0056 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 4 Report Version A Reference No.: 2210WDG0056 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 4 Report Version A Reference No.: 2210WDG0056 BT ANT

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 6 Report Version A Test Report No.: FM2210WDG0056 RF EXPOSURE REPORT Applicant GLOBAL TEST SUPPLY LLC. Address 312 Raleigh Street, Suite 9 Wilmington, NC 28412 Manufacturer or Supplier Shenzhen Everbest Machinery Industry Co., Ltd Address 19th Building, 5th Region, Baiwangxin Industrial Park, SongBai Rd., Baimang, Xili, Nanshan, Shenzhen China Product Sound Level Meter Brand Name REED Instruments Model R1620 Additional Model & Model Difference N/A Date of tests Nov. 18, 2022 ~ Nov. 28, 2022 FCC Part 2 (Section 2.1093) KDB 447498 D01 IEEE C95.1 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Tested by Andy Zhu Supervisor / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: Dec. 28, 2022 This report is governed by, and incorporates by reference, the Conditions of Testing as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/ and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. Statements of conformity are based on simple acceptance criteria without taking measurement uncertainty into account, unless otherwise requested in writing. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents.. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 6 Report Version A Test Report No.: FM2210WDG0056 TABLE OF CONTENTS RELEASE CONTROL RECORD ................................................................................ 3 1. CERTIFICATION .............................................................................................. 4 2. RF EXPOSURE DEFINE ................................................................................. 5 3. CLASSIFICATION ........................................................................................... 5 4. SAR TEST EXCLUSION THRESHOLDS ........................................................ 6 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 6 Report Version A Test Report No.: FM2210WDG0056 RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED FM2210WDG0056 Original release Dec. 28, 2022 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 6 Report Version A Test Report No.: FM2210WDG0056 1. CERTIFICATION FCC ID: 2A8GT-R1620 PRODUCT: Sound Level Meter BRAND NAME: REED Instruments MODEL NO.: R1620 ADDITIONAL NO.: N/A APPLICANT: GLOBAL TEST SUPPLY LLC STANDARDS: FCC Part 2 (Section 2.1093) KDB 447498 D01 IEEE C95.1 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 5 of 6 Report Version A Test Report No.: FM2210WDG0056 2. RF EXPOSURE DEFINE The corresponding SAR Exclusion Threshold condition, listed below: 1) 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,16 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. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·( f(MHz)/150)] mW, at 100MHz to 1500 MHz b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·10] mW at > 1500 MHz…

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Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 44 Report Version A Test Report No.: RF2210WDG0056 TEST REPORT Applicant GLOBAL TEST SUPPLY LLC. Address 312 Raleigh Street, Suite 9 Wilmington, NC 28412 Manufacturer or Supplier Shenzhen Everbest Machinery Industry Co., Ltd Address 19th Building, 5th Region, Baiwangxin Industrial Park, SongBai Rd., Baimang, Xili, Nanshan, Shenzhen China Product Sound Level Meter Brand Name REED Instruments Model R1620 Additional Model & Model Difference N/A Date of tests Nov. 18, 2022 ~ Nov. 28, 2022 the tests have been carried out according to the requirements of the following standard: FCC Part 15, Subpart C, Section 15.247 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Tested by Andy Zhu Supervisor / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: Dec. 28, 2022 This report is governed by, and incorporates by reference, the Conditions of Testing as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/ and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. Statements of conformity are based on simple acceptance criteria without taking measurement uncertainty into account, unless otherwise requested in writing. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 44 Report Version A Test Report No.: RF2210WDG0056 TABLE OF CONTENTS RELEASE CONTROL RECORD ............................................................................................................ 4 1 SUMMARY OF TEST RESULTS .................................................................................................... 5 2 MEASUREMENT UNCERTAINTY ................................................................................................. 5 3 GENERAL INFORMATION ............................................................................................................ 6 3.1 GENERAL DESCRIPTION OF EUT ............................................................................................. 6 3.2 DESCRIPTION OF TEST MODES ............................................................................................... 7 3.2.1. CONFIGURATION OF SYSTEM UNDER TEST ............................................................... 7 3.2.2. TEST MODE APPLICABILITY AND TESTED CHANNEL DETAIL .................................... 7 3.3 GENERAL DESCRIPTION OF APPLIED STANDARDS .............................................................. 9 3.4 DESCRIPTION OF SUPPORT UNITS ......................................................................................... 9 3.5 DESCRIPTION OF SUPPORT UNITS ......................................................................................... 9 4 TEST TYPES AND RESULTS ...................................................................................................... 10 4.1 RADIATED EMISSION MEASUREMENT .................................................................................. 10 4.1.1 LIMITS OF RADIATED EMISSION MEASUREMENT .................................................... 10 4.1.2 TEST INSTRUMENTS ...................................................................................................... 11 4.1.3 TEST PROCEDURES ..................................................................................................... 12 4.1.4 DEVIATION FROM TEST STANDARD ........................................................................... 13 4.1.5 TEST SETUP ................................................................................................................... 13 4.1.6 EUT OPERATING CONDITIONS .................................................................................... 14 4.1.7 TEST RESULTS .............................................................................................................. 15 4.2 6DB BANDWIDTH MEASUREMENT ......................................................................................... 23 4.2.1 LIMITS OF 6DB BANDWIDTH MEASUREMENT ........................................................... 23 4.2.2 TEST INSTRUMENTS ..................................................................................................... 23 4.2.3 TEST PROCEDURE ........................................................................................................ 24 4.2.4 DEVIATION FROM TE…

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NOTE:ThisdocumentisissuedbyShenzhenMorlabCommunicationsTechnologyCo.,Ltd.,thetestreportshallnotbereproducedexceptin fullwithoutpriorwrittenpermissionofthecompany.Thetestresultsapplyonlytotheparticularsample(s)testedandtothespecifictestscarried outwhichisavailableonrequestforvalidationandinformationconfirmedatourwebsite. MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.,FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page1of 14 REPORTNo.：SZ22110117E01 TESTREPORT APPLICANT:ZhejiangLierdaInternetofThingsTechnologyCo.,Ltd PRODUCTNAME:T55BLEModule MODELNAME:LSD4BT-T55ASTD001 TRADENAME:Lierda BRANDNAME:N/A STANDARD(S):IEEEStd149-2021 RECEIPTDATE:2022-11-10 TESTDATE:2022-11-10 ISSUEDATE:2022-11-22 Editedby: FangJinshan(Rapporteur) Approvedby: ChiShide(Supervisor) MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page2of14 REPORTNo.：SZ22110117E01 DIRECTORY 1.TechnicalInformation ........................................................................................................3 1.1.ApplicantandManufacturerInformation ....................................................................3 1.2.EquipmentUnderTest(EUT)Description...................................................................3 2.TestResults........................................................................................................................4 2.1.AppliedReferenceDocuments.....................................................................................4 2.2.TestConditions...............................................................................................................4 2.3.MeasurementUncertainty.............................................................................................4 2.4.TestResultslists.............................................................................................................5 AnnexAPhotographs...........................................................................................................6 AnnexBFigures .....................................................................................................................7 1.2DRadiationPattern .........................................................................................................7 2.3DRadiationPattern .........................................................................................................8 AnnexCPhotographs .........................................................................................................12 AnnexDGeneralInformation .............................................................................................14 1.1IdentificationoftheResponsibleTestingLaboratory..............................................14 1.2IdentificationoftheResponsibleTestingLocation..................................................14 1.3TestEquipmentsUtilized..............................................................................................14 ChangeHistory VersionDateReasonforchange 1.02022-11-22Firstedition MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page3of14 REPORTNo.：SZ22110117E01 1.TechnicalInformation Note:Providebymanufacturer. 1.1.ApplicantandManufacturerInformation Applicant: ZhejiangLierdaInternetofThingsTechnologyCo.,Ltd ApplicantAddress: Room1402,building1,No.1326,WenyiWestRoad,Cangqian street,YuhangDistrict,Hangzhou,Zhejiang Manufacturer:ZhejiangLierdaInternetofThingsTechnologyCo.,Ltd ManufacturerAddress:Room1402,building1,No.1326,WenyiWestRoad,Cangqian street,YuhangDistrict,Hangzhou,Zhejiang 1.2.EquipmentUnderTest(EUT)Description WirelessTypeBluetooth FrequencyN/A IMEIN/A SampleNo.1# MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page4of14 REPORTNo.：SZ22110117E01 2.TestResults 2.1.AppliedReferenceDocuments Leadingreferencedocumentsfortesting: No.IdentityDocumentTitle 1 IEEEStd149-2021 IEEERecommendedPracticeforAntenna Measurements 2.2.TestConditions TestEnvironmentConditions ： RelativeHumidity:25...75% Temperature:+10°Cto+30°C 2.3.MeasurementUncertainty Theuncertaintyiscalculatedusingthemethodssuggestedinthe"GuidetotheExpressionof UncertaintyinMeasurement"(GUM)publishedbyISO.Whenthetestresultisacriticalvalue,we willusethemeasurementuncertaintygivethejudgmentresultbasedonthe95%Confidence intervals. ItemMeasurementUncertainty(dB) Gain±0.5 VSWR±0.2 MeasurementUncertainty(95%ConfidenceInterval)K=2 MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page5of14 REPORTNo.：SZ22110117E01 2.4.TestResultslists 2.4.1.GainandEfficiency Frequency(MHz)Efficiency(%)Gain(dBi) 24008.98-5.12 24109.43-4.99 24209.79-4.80 243010.36-4.48 244011.11-4.12 245012.00-3.79 246012.64-3.74 247012.89-3.71 248013.19-3.51 249013.15-3.40 250013.58-3.13 2.4.2.VSWRandImpedance FrequencyVSWR Impedance (Ω) 2400MHz4.0588.41 2440MHz 2.68132.12 2480MHz1.7350.37 2.4.3.ReturnLoss Frequency ReturnLoss (dB) 2400MHz-4.36 2440MHz -6.79 2480MHz-11.38 MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-366…

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Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 2 Report Version A Reference No.: 2210WDG0056 SET-UP FOR RADIATED EMISSION TEST Frequency Range< 30MHz~1GHz > Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel.: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 2 Report Version A Reference No.: 2210WDG0056 Frequency Range< Above 1GHz >