FCC ID: 2ATBS-AKOIHRT20 AKOI HEART

Label drawing FCC ID: 2ATBS-AKOIHRT20

Biz Center-314, SKn Techno Park, 124, Sagimakgol-ro, Jungwon-gu, Seongnam-si,Gyeonggi-do, South Korea TPNET CO., LTD Date: May 31, 2019 Timco Engineering, Inc. 849 N.W. State Road 45 P.O. Box 370 Newberry, Florida 32669 USA Letter of Authorization We, the undersigned, hereby authorize Guenki Son of DT&C Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2ATBS-AKOIHRT20 including signing of all documents relating to these matters. Any and all acts carried out by Guenki Son of DT&C Co., Ltd. on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from TPNET CO., LTD I, 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. 853(a). Sincerely, An Bonghyun President

Biz Center-314, SKn Techno Park, 124, Sagimakgol-ro, Jungwon-gu, Seongnam-si,Gyeonggi-do, South Korea TPNET CO., LTD Date: May 31, 2019 Timco Engineering, Inc. 849 N.W. State Road 45 P.O. Box 370 Newberry, Florida 32669 USA RE: Request of Confidentiality for FCC ID: 2ATBS-AKOIHRT20 To Whom It may Concern:

Pursuant to Sections 0.457 and 0.459 of the Commission`s Rules(CFR 47), and Section 552 (b) (4) of the Freedom of Information Act, TPNET CO., LTD hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give TPNET CO., LTD temporary confidentiality of commercially sensitive information prior to product release. The requested permanent and Short-Term Confidential exhibits are listed as follows:

PERMANENT & SHORT-TERM CONFIDENTIAL LIST Exhibit Description PERMANENT SHORT-TERM 1 2 3 4 5 6 7 8 Block Diagram Schematics Part Lists Operation Description Internal Photos External Photos Test-Setup Photos User Manual The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be public before the date of the Grant for this application. Sincerely, An Bonghyun President