HYUNDAI MOBIS CO., LTD. 203 Teheran-ro, Gangnam-gu, Seoul, Korea, 135-977 Date: Dec 18, 2017 Timco Engineering, Inc. 849 N.W. State Road 45 P.O. Box 370 Newberry, Florida 32669 USA Seung Hoon Choe Manager Letter of Authorization We, the undersigned, hereby authorize Harvey Sung of DT&C Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: TQ8-AVB40DJAN including signing of all documents relating to these matters. Any and all acts carried out by Harvey Sung 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 HYUNDAI MOBIS 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,