2ATNDGOOVISC10Wireless Cast

FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.

Shenzhen NED Optics Co., LTD. ADD: Rm W101, 1/F, West Block, PKU-HKUST SZ-HK,Institution No15, Gaoxinnan 7th Rd, Nanshan District, Shenzhen, China Tel: 0755-86547692 Fax: 0755-86547692 E-mail: [email protected] Attestation Letter 2021-04-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam, The RF chip, model: RTL8821CU, installed in our product Wireless Cast, model: C10, FCC ID: 2ATNDGOOVISC10, this chip supports Bluetooth, 2.4G Wi-Fi & 5G Wi-Fi. But for marketing purpose, this chip in this product only supports 2.4G Wi-Fi, 5G Wi-Fi (5150-5250MHz; 5725-5850MHz) band. The Bluetooth and other 5G WIFI bands was disabled to use by manufacture in the software, the end user has no capability to activate it. Sincerely Yours, Signature: Contact person: Xigou Wan Title: Manager

Shenzhen NED Optics Co., LTD. ADD: Rm W101, 1/F, West Block, PKU-HKUST SZ-HK,Institution No15, Gaoxinnan 7th Rd, Nanshan District, Shenzhen, China Tel: 0755-86547692 Fax: 0755-86547692 E-mail: [email protected] FCC Confidential Authorization Date: 2021-02-19 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ATNDGOOVISC10 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Shenzhen NED Optics Co., LTD., hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description • Software Security Description 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: Contact person: Xigou Wan Title: Manager

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 1 of 3 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 3 of 3

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF EXHIBIT A - FCC ID LABEL AND LOCATION 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)

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 1 of 7 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS 5G WIFI ANT 2.4G WIFI ANT Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 2 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 3 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 4 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 5 of 7 Base Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 6 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 7 of 7

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ201222012-00B FCC Part 15.407 Page 13 of 77 FCC §15.407(f) & §1.1307 (b) (1)& §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart 15.407 (f) and subpart 1.1307 (b)(1), 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. Limits for General Population/Uncontrolled Exposure Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (Minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density Result Calculated Formulary: Predication of MPE limit at a given distance S = 2 4R PG π S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e.g., mW). G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain. R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) Mode Frequency (MHz) Antenna Gain Tune up conducted power Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric) (dBm) (mW) 5G Wi-Fi 5150-5250 2.81 1.91 11.5 14.13 20 0.0054 1 5725-5850 2.81 1.91 13.0 19.95 20 0.0076 1 Note: 1. the tune up conducted power was declared by the applicant 2. the 2.4G Wi-Fi cannot transmit at the same time with the 5G Wi-Fi. To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Result: Compliance

Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. BACL 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. FCC PART 15.407 TEST REPORT For Shenzhen NED Optics Co., LTD. Rm W101, 1/F, West Block, PKU-HKUST SZ-HK,Institution No15, Gaoxinnan 7th Rd,Nanshan District, Shenzhen,China FCC ID: 2ATNDGOOVISC10 Report Type: Original Report Product Type: Wireless Cast Re port Number: RSZ201222012-00B Re port Date: 2021-04-19 Reviewed B y: Jacob Kong RF Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) ,6F,7F,the 3rd Phase of Wan Li Industrial Building D,Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ201222012-00B FCC Part 15.407 Page 2 of 77 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 DUTY CYCLE ................................................................................................................................................................ 8 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 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 §15.407(f) & §1.1307 (b) (1)& §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE) ............................. 13 APPLICABLE STANDARD ............................................................................................................................................ 13 RESULT ...................................................................................................................................................................... 13 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 FCC §15.407 (b) (6) §15.207 (a) – CONDUCTED EMISSIONS ............................................................................. 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER SETUP ....................................................................................................................................... 15 TEST PROCEDURE ...................................................................................................................................................... 15 TEST DATA ................................................................................................................................................................ 16 §15.205 & §15.209 & §15.407(B) (1),(4),(6),(7) – UNDESIRABLE EMISSION ..............................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 1 of 2 EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions - Front View Conducted Emissions - Side View Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ201222012-RF Page 2 of 2 Radiated Emissions – Front View (Below 1 GHz) Radiated Emissions View (Above 1 GHz)