2AIL4-PC319AWireless Presenter

reception functions. This USB receiver only has

VTIN TECHNOLOGY Co., Limited ADD: UNIT D 16/F ONE CAPITAL PLACE 21 LUARD ROAD WAN CHAI Hong Kong TEL: 0755-26008484 FAX: 0755-26008484 E-mail: [email protected] DECLARATION OF SIMILARITY Date: 2020-11-12 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, VTIN TECHNOLOGY Co., Limited, hereby declare that the product: WIRELESS Presenter, FCC ID: 2AIL4- PC319A. model: PC319B,PC319C is electrically identical with the model: PC319A which was tested by BACL with the same electromagnetic emissions and electromagnetic compatibility characteristics. A description of the differences between those models and that are declared similar are as follows: They are the same product, and just the different model name, the rest are the same. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Derric Bai Manager

QA-FR-170-B VTIN TECHNOLOGY Co., Limited ADD: UNIT D 16/F ONE CAPITAL PLACE 21 LUARD ROAD WAN CHAI Hong Kong TEL: 0755-26008484 FAX: 0755-26008484 E-mail: [email protected] FCC Authorization Date: 2020-11-12 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , VTIN TECHNOLOGY Co., Limited, Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corporation on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Derric Bai Manager

QA-FR-171-A VTIN TECHNOLOGY Co., Limited Add: UNIT D 16/F ONE CAPITAL PLACE 21 LUARD ROAD WAN CHAI Hong Kong Tel: 0755-26008484 Fax: 0755-26008484 Email: [email protected] FCC Confidential Authorization Date: 2020-11-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AIL4-PC319A In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (VTIN TECHNOLOGY Co., Limited) hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation 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, Signature: Derric Bai Manager

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Antenna

FCC PART 15.249 TEST REPORT For VTIN TECHNOLOGY CO.,LIMITED UNIT D 16/F ONE CAPITAL PLACE 21 LUARD ROAD WAN CHAI HK FCC ID: 2AIL4-PC319A Report Type: Original Report Product Type: WIRELESS Presenter Re port Number: RDG201022001-00A Re port Date: 2020-11-10 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG201022001-00A Page 2 of 18 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 3 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 3 OBJECTIVE ................................................................................................................................................................... 3 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 3 TEST METHODOLOGY .................................................................................................................................................. 3 MEASUREMENT UNCERTAINTY .................................................................................................................................... 4 TEST FACILITY ............................................................................................................................................................. 4 DECLARATIONS ............................................................................................................................................................ 4 SYSTEM TEST CONFIGURATION .......................................................................................................................... 5 JUSTIFICATION ............................................................................................................................................................. 5 EUT EXERCISE SOFTWARE .......................................................................................................................................... 5 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 5 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 5 SUMMARY OF TEST RESULTS ............................................................................................................................... 6 FCC§15.203 - ANTENNA REQUIREMENT .............................................................................................................. 7 APPLICABLE STANDARD .............................................................................................................................................. 7 ANTENNA CONNECTOR CONSTRUCTION ...................................................................................................................... 7 FCC§15.205, §15.209&§15.249- RADIATED EMISSIONS ...................................................................................... 8 APPLICABLE STANDARD .............................................................................................................................................. 8 EUT SETUP .................................................................................................................................................................. 8 TEST EQUIPMENT SETUP .............................................................................................................................................. 9 TEST PROCEDURE ........................................................................................................................................................ 9 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 10 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 10 TEST DATA ................................................................................................................................................................ 11 FCC §15.215(C) – 20 DB BANDWIDTH TESTING ................................................................................................ 16 APPLICABLE STANDARD ............................................................................................................................................ 16 TEST PROCEDURE ...................................................................................................................................................... 16 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 16 TEST DATA ................................................................................................................................................................ 16 Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG201022001-00A Page 3 of 18 GENERAL INFORMATION Product Description for Equipment under Test (EUT) EUT Name: WIRELESS Presenter EUT Model: PC319A Multiple Model: PC319B, PC319C Operation Frequency: 2402-2480 MHz Modulation Type: GFSK Antenna Gain△: 0dBi Rated Input Voltage: DC 1.5V from battery Serial Number: RDG201022001-RF-S1 EUT Received Date: 2020.10.22 EUT Received Status: Good The series product, models PC319A, PC319B, PC319C are electrically identical. Model: PC319A was full tested. The diff…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View