FCC ID: 2AAR8TT122 Wireless Transmission System

INPUT:DC 5V,1A OUTPUT:DC 4.2V, 370mA Wireless Transmission System Model: TT122 FCC ID:2AAR8TT122 IC:23503-TT122 MADE IN HINA S/N:2001R1221100001 Henan Eshow Electronic Commerce Co., Ltd Room 722, Sanjiang Building, No.170 Nanyang Road, Huiji District, Zhengzhou, Henan, China

HENAN ESHOW ELECTRONIC COMMERCE CO., LTD Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AAR8TT122 Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type Block Diagram, Schematics, Operational Description, File Name Block Diagram Operation Description schematic diagram 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. Sincerely, Dec. 28, 2020 Weidong Shen / Manager HENAN ESHOW ELECTRONIC COMMERCE CO., LTD

Differences Declaration To whom concern, We company,HENAN ESHOW ELECTRONIC COMMERCE CO., LTD, hereby declares:

The following product models TT123, TT124, TT125, TT126,TT127, TT128, TT129, TT130, TT131, TT132, TT133, TT134, TT135, TT136, TT137, TT138,TT139, TT140 are identical in the same PCB layout, interior structure and electrical circuits with the model TT122 which tested in EMTEK Co., Ltd. The only differences are the model name and the color of the housing for commercial purpose. Sincerely yours, Name:Weidong Shen Title:Manager Company Address: Room 722, Sanjiang Building, No.170 Nanyang Road, Huiji District,Zhengzhou, Henan, China Tel/Fax: +86 0371-63262209 E-Mail: shenweidong02@126.com

HENAN ESHOW ELECTRONIC COMMERCE CO., LTD Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 2020-12-28 SUBJECT: FCC Application for FCC ID: 2AAR8TT122 To Whom It May Concern:

We, the undersigned, hereby authorize Lisa Wang at EMTEK (SHENZHEN) CO., LTD.on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK (SHENZHEN) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Weidong Shen / Manager HENAN ESHOW ELECTRONIC COMMERCE CO., LTD