HBOR28BTAmazonBasics Bookshelf Speakers with Active Speaker

Difference Declaration Original Model No.:R28BTUS Adding Model No.:B07WBS8ML1 To whom it may concern, We, SHENZHEN FENDA TECHNOLOGY CO., LTD. would like to declare those models R28BTUS, B07WBS8ML1 are identical in PCBA, Drivers, and Enclosure .The only difference are model number and color of enclosure. Sincerely yours, Applicant:SHENZHEN FENDA TECHNOLOGY CO., LTD. Address:Fenda Hi-Tech Park, Zhoushi Road, Shiyan Town, Baoan District, Shenzhen, China Signature: Name and title:Mr frank Chenzhonghua / engineer Email:[email protected] Tel.:0755-27486668

Confidentiality Letter Date: 2020-03-30 Subject: Confidentiality Request for FCC ID: HBOR28BT and IC ID: 10550A-R28BT Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality RequestedExhibit Short Term PermanentBlock Diagrams Short TermExternal Photos Short Term PermanentInternal Photos Short Term PermanentOperation Description/Theory of Operation Short Term PermanentPart List/Tune-Up Procedure Short Term PermanentSchematics Short TermTest Setup Photos Short Term PermanentUser’s Manual SHENZHEN FENDA TECHNOLOGY CO., LTD. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. 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: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04- 1705. Sincerely, By:Mr frank Chenzhonghua (Signature/Title)(Print name)

Produkte Products Prüfbericht - Nr.: Test Report No.: 50323394 001 Seite 26 von 27 Page 26 of 27 6 Safety Human Exposure 6.1 Radio Frequency Exposure Compliance 6.1.1 Electromagnetic Fields RESULT: Pass Test Specification Test standard : CFR47 FCC Part 2.1093 RSS-102 Issue 5 March 2015 FCC KDB Publication 447498 v06 Limit : CFR47 FCC Part 1.1310 The separation distance of the EUT should be 5mm.The measured maximum conducted power of the EUT is 5.29dBm ≈ 3.38 mW , which is far below the SAR exclusion threshold level 10mW (Appendix A, SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤50 mm), hence the EUT is excluded from SAR evaluation according to FCC KDB publication 447498 D01: Mobile and Portable RF Exposure. Guidance v06. The separation distance of the EUT should be 5mm.The measured maximum output power of the EUT is 5.29dBm ≈ 3.38 mW, which is below the SAR exclusion threshold level 4mW, hence the EUT is excluded from SAR evaluation according to RSS-102 Issue 5 section 2.5.1.

Produkte Products Prüfbericht-Nr.: Test report No.: 50323394 001 Auftrags-Nr.: Order No.: 168136581Seite 1 von 27 Page 1 of 27 Kunden-Referenz-Nr.: Client reference No.: N/A Auftragsdatum: Order date: 18.10.2019 Auftraggeber: Client: SHENZHEN FENDA TECHNOLOGY CO., LTD. Fenda Hi-Tech Park, Zhoushi Road, Shiyan Town, Baoan District, Shenzhen, China Prüfgegenstand: Test item: AmazonBasics Bookshelf Speakers with Active Speaker, 40W, 20-20KHz Bezeichnung / Typ-Nr.: Identification / Type No.: R28BTUS, B07WBS8ML1 (Trademark: ) Auftrags-Inhalt: Order content: FCC and IC approval Prüfgrundlage: Test specification: CFR47 FCC Part 15: Subpart C Section 15.247 CFR47 FCC Part 15: Subpart C Section 15.207 CFR47 FCC Part 15: Subpart C Section 15.209 CFR47 FCC Part 2.1093 RSS-247 Issue 2 February 2017 RSS-Gen Issue 5 March 2019 RSS-102 Issue 5 March 2015 Wareneingangsdatum: Date of receipt: 08.11.2019 Prüfmuster-Nr.: Test sample No.: A001021700-001 Prüfzeitraum: Testing period: 18.11.2019 - 02.12.2019 Ort der Prüfung: Place of testing: TÜV Rheinland (Shenzhen) Co., Ltd. Prüflaboratorium: Testing laboratory: TÜV Rheinland (Shenzhen) Co., Ltd. Prüfergebnis*: Test result*: Pass Please refer to photo documents geprüft von / tested by:kontrolliert von / reviewed by: 16.04.2020Alex Lan / Senior Project Engineer16.04.2020Winnie Hou / Technical Certifier Datum Date Name/Stellung Name/Position Unterschrift Signature Datum Date Name/Stellung Name/Position Unterschrift Signature Sonstiges / Other: FCC ID: HBOR28BT IC: 10550A-R28BT HVIN: R28BT Zustand des Prüfgegenstandes bei Anlieferung: Condition of the test item at delivery: Prüfmuster vollständig und unbeschädigt Test item complete and undamaged: Legende:1 = sehr gut2 = gut3 = befriedigend4 = ausreichend5 = mangelhalt P(ass) = entspricht o.g. Prüfgrundlage(n)F(ail) = entspricht nicht o.g. Prüfgrundlage(n)N/A = nicht anwendbarN/T = nicht getestet Legend:1 = very good2 = good3 = satisfactory4 = sufficient5 = poor P(ass) = passed a.m. test specifications(s)F(ail) = failed a.m. test specifications(s)N/A = not applicableN/T = not tested Dieser Prüfbericht bezieht sich nur auf das o.g. Prüfmuster und darf ohne Genehmigung der Prüfstelle nicht auszugsweise vervielfältigt werden. Dieser Bericht berechtigt nicht zur Verwendung eines Prüfzeichens. This test report only relates to the a. m. test sample. Without permission of the test center this test report is not permitted to be V04 duplicated in extracts. This test report does not entitle to carry any test mark. TÜV Rheinland (Shenzhen) Co., Ltd., East of F/1, F/2 - F/4, Building 1, Cybio Technology Building, No. 6 Langshan No. 2 Road, North Hi-tech Industry Park, Nanshan District, Shenzhen, P.R. China http://www.tuv.com Produkte Products Prüfbericht - Nr.: Test Report No.: 50323394 001 Seite 2 von 27 Page 2 of 27 Test Summary 5.1.1ANTENNA REQUIREMENT RESULT:Pass 5.1.2MAXIMUM CONDUCTED OUTPUT POWER RESULT:Pass 5.1.399% BANDWIDTH RESULT:Pass 5.1.4CONDUCTED SPURIOUS EMISSIONS MEASURED IN 100 KHZ BANDWIDTH RESULT:Pass 5.1.5RADIATED SPURIOUS EMISSION RESULT:Pass 5.1.620DB BANDWIDTH RESULT:Pass 5.1.7CARRIER FREQUENCY SEPARATION RESULT:Pass 5.1.8NUMBER OF HOPPING FREQUENCY RESULT:Pass 5.1.9TIME OF OCCUPANCY RESULT:Pass 5.1.10CONDUCTED EMISSION ON AC MAINS RESULT:Pass 6.1.1ELECTROMAGNETIC FIELDS RESULT:Pass Produkte Products Prüfbericht - Nr.: Test Report No.: 50323394 001 Seite 3 von 27 Page 3 of 27 Contents 1GENERAL REMARKS..........................................................................................................................5 1.1COMPLEMENTARY MATERIALS............................................................................................................5 2TEST SITES........................................................................................................................................5 2.1TEST FACILITIES................................................................................................................................5 2.2LIST OF TEST AND MEASUREMENT INSTRUMENTS................................................................................6 2.3TRACEABILITY...................................................................................................................................8 2.4CALIBRATION.....................................................................................................................................8 2.5MEASUREMENT UNCERTAINTY............................................................................................................8 2.6LOCATION OF ORIGINAL DATA............................................................................................................8 2.7STATUS OF FACILITY USED FOR TESTING............................................................................................8 3GENERAL PRODUCT INFORMATION.....................................................................................................9 3.1PRODUCT FUNCTION AND INTENDED USE............................................................................................9 3.2RATINGS AND SYSTEM DETAILS..........................................................................................................9 3.3INDEPENDENT OPERATION MODES....................................................................................................12 3.4NOISE GENERATING AND NOISE SUPPRESSING PARTS......................................................................12 3.5SUBMITTED DOCUMENTS..................................................................................................................12 4TEST SET-UP AND OPERATION MODES..............................................................................................13 4.1PRINCIPLE OF CONFIGURATION SELECTION.......................................................................................13 4.2TEST OPERATION AND TEST SOFTWARE..................................................................................…

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Produkte Products Appendix A 50323394 001 Page 1 of 3 Appendix A: Photographs of the Test Set-Up APPENDIX A: PHOTOGRAPHS OF THE TEST SET-UP.......................................................................................................1 PHOTOGRAPH 1: SET-UP FOR RADIATED SPURIOUS EMISSION, BELOW 1GHZ....................................................................................2 PHOTOGRAPH 2: SET-UP FOR RADIATED SPURIOUS EMISSION, ABOVE 1GHZ....................................................................................2 PHOTOGRAPH 3: SET-UP FOR CONDUCTED EMISSION ON AC MAINS...............................................................................................3 Produkte Products Appendix A 50323394 001 Page 2 of 3 Photograph 1: Set-up for Radiated Spurious Emission, Below 1GHz Photograph 2: Set-up for Radiated Spurious Emission, Above 1GHz Produkte Products Appendix A 50323394 001 Page 3 of 3 Photograph 3: Set-up for Conducted Emission on AC Mains