Ohio Rev. Code Ann. § 1301.301
Territorial applicability; parties' power to choose applicable law [UCC 1-301]
(C) If one of the following provisions of Chapters 1301., 1302., 1303., 1304., 1305., 1307., 1308., 1309., and 1310. of the Revised Code specifies the applicable law, that provision governs and a contrary agreement is effective only to the extent permitted by the law so specified: