Ohio Revised Code Title LIII. Real Property § 5313.06

(A) Reasonably identifies the contract and describes the property covered by it;

(B) Specifies the terms and conditions of the contract which have not been complied with;

(C) Notifies the vendee that the contract will stand forfeited unless the vendee performs the terms and conditions of the contract within ten days of the completed service of notice and notifies the vendee to leave the premises.

Such notice shall be served by the vendor or his successor in interest by handing a written copy of the notice to the vendee or his successor in interest in person, or by leaving it at his usual place of abode or at the property which is the subject of the contract or by registered or certified mail by mailing to the last known address of the vendee or his successor in interest.