OGGK3MX2255SPEAKER

Differences Declaration To whom concern, We company GUANGZHOU PANYU MINFU SPEAKER FACTORY hereby declares: The product models NDS-1235, NDS-1236, NDS-1240, NDS-1241, NDS-1242, NDS-1243, NDS-1244, NDS-1245, NDS-1246, NDS-1247, NDS-1248, NDS-1249, NDS-1251, NDS-1252, NDS-1253, NDS-1254, NDS-1255, NDS-1256, NDS-1257, NDS-1258, NDS-1259, NDS-1260, NDS-1261, NDS-1262, NDS-1263, NDS-1264, NDS-1265, NDS-1266, NDS-1267, NDS-1268, NDS-1269, NDS-1536, NDS-1537, NDS-1538, NDS-1539, NDS-1540, NDS-1541, NDS-1542, NDS-1543, NDS-1544, NDS-1545, NDS-1546, NDS-1547, NDS-1548, NDS-1549, NDS-1550, NDS-1551, NDS-1552, NDS-1553, NDS-1554, NDS-1555, NDS-1556, NDS-1557, NDS-1558, NDS-1559, NDS-1560 are identical in the same PCB layout, interior structure and electrical circuits, The differences are appearance color and model name for commercial purpose. Authorized signature: Date: 2021-05-25

Agent Authorization Letter Company: GUANGZHOU PANYU MINFU SPEAKER FACTORY Address: DONG SHENG SAN HENG RD., CHADONG, SHIJI, PANYU DIS, GUANGZHOU, China Product Name: SPEAKER Model Number(s): NDS-1235, NDS-1236, NDS-1240, NDS-1241, NDS-1242, NDS-1243, NDS-1244, NDS-1245, NDS-1246, NDS-1247, NDS-1248, NDS- 1249, NDS-1251, NDS-1252, NDS-1253, NDS-1254, NDS-1255, NDS-1256, NDS-1257, NDS-1258, NDS-1259, NDS-1260, NDS-1261, NDS-1262, NDS- 1263, NDS-1264, NDS-1265, NDS-1266, NDS-1267, NDS-1268, NDS-1269, NDS-1536, NDS-1537, NDS-1538, NDS-1539, NDS-1540, NDS-1541, NDS- 1542, NDS-1543, NDS-1544, NDS-1545, NDS-1546, NDS-1547, NDS-1548, NDS-1549, NDS-1550, NDS-1551, NDS-1552, NDS-1553, NDS-1554, NDS- 1555, NDS-1556, NDS-1557, NDS-1558, NDS-1559, NDS-1560 Product Description: SPEAKER We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-05-22 Name: Pan FuXin Title: Manager Company: GUANGZHOU PANYU MINFU SPEAKER FACTORY

GUANGZHOU PANYU MINFU SPEAKER FACTORY Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021-05-25 Subject; Request for Confidentiality FCC ID: OGGK3MX2255 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Pan FuXin Title: Manager

Test Model No.: NDS-1235

Test Model No.: NDS-1235

Global United Technology Services Co., Ltd. Report No.: GTSL202103000140F01 Authorized Signature: Robinson Lo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 29 + TEST REPORT Applicant: GUANGZHOU PANYU MINFU SPEAKER FACTORY Address of Applicant: DONG SHENG SAN HENG RD., CHADONG, SHIJI, PANYU DIS, GUANGZHOU, China Manufacturer/Factory: GUANGZHOU PANYU MINFU SPEAKER FACTORY Address of Manufacturer/Factory: DONG SHENG SAN HENG RD., CHADONG, SHIJI, PANYU DIS, GUANGZHOU, China Equipment Under Test (EUT) Product Name: SPEAKER Model No.: See section 5.1 Trade Mark: N/A FCC ID: OGGK3MX2255 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: March 15, 2021 Date of Test: March 16-31, 2021 Date of report issued: April 01, 2021 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202103000140F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 29 2 Version Version No. Date Description 00 April 01, 2021 Original Prepared By: Date: April 01, 2021 Project Engineer Check By: Date: April 01, 2021 Reviewer Report No.: GTSL202103000140F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 29 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 4.1 MEASUREMENT UNCERTAINTY ............................................................................................................ 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 8 5.7 TEST LOCATION ................................................................................................................................. 8 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 8 6 TEST INSTRUMENTS LIST ..................................................................................................................... 9 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 11 7.1 ANTENNA REQUIREMENT ................................................................................................................... 11 7.2 CONDUCTED EMISSIONS ................................................................................................................... 12 7.3 RADIATED EMISSION METHOD ........................................................................................................... 15 7.3.1 Field Strength of The Fundamental Signal ................................................................................ 17 7.3.2 Spurious emissions .................................................................................................................... 18 7.3.3 Bandedge emissions.................................................................................................................. 23 7.4 20DB OCCUPY BANDWIDTH .............................................................................................................. 25 8 TEST SETUP PHOTO ............................................................................................................................ 29 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 29 Report No.: GTSL202103000140F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 29 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conducted Emission 15.207 Pass Field strength of the fundamental signal 15.249 (a) Pass Spurious emissions 15.249 (…

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Global United Technology Services Co., Ltd. Report No.: GTSL202103000140F02 Authorized Signature: Robinson Lo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 26 TEST REPORT Applicant: GUANGZHOU PANYU MINFU SPEAKER FACTORY Address of Applicant: DONG SHENG SAN HENG RD., CHADONG, SHIJI, PANYU DIS, GUANGZHOU, China Manufacturer/Factory: GUANGZHOU PANYU MINFU SPEAKER FACTORY Address of Manufacturer/Factory: DONG SHENG SAN HENG RD., CHADONG, SHIJI, PANYU DIS, GUANGZHOU, China Equipment Under Test (EUT) Product Name: SPEAKER Model No.: See section 5.1 Trade Mark: N/A FCC ID: OGGK3MX2255 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: March 15, 2021 Date of Test: March 16-31, 2021 Date of report issued: April 01, 2021 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202103000140F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 26 2 Version Version No. Date Description 00 April 01, 2021 Original Prepared By: Date: April 01, 2021 Project Engineer Check By: Date: April 01, 2021 Reviewer Report No.: GTSL202103000140F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 26 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 4.1 MEASUREMENT UNCERTAINTY ............................................................................................................ 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT ................................................................................................................... 10 7.2 CONDUCTED EMISSIONS ................................................................................................................... 11 7.3 RADIATED EMISSION METHOD ........................................................................................................... 14 7.3.1 Field Strength of The Fundamental Signal ................................................................................ 16 7.3.2 Spurious emissions .................................................................................................................... 17 7.3.3 Bandedge emissions.................................................................................................................. 22 7.4 20DB OCCUPY BANDWIDTH .............................................................................................................. 24 8 TEST SETUP PHOTO ............................................................................................................................ 26 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 26 Report No.: GTSL202103000140F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 26 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conducted Emission 15.207 Pass Field strength of the fundamental signal 15.249 (a) Pass Spurious emissions 15.249 (a)…

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Test Model No.: NDS-1235 Radiated Emission Conducted Emission