(a) Any person who practices the fitting and sale of hearing aids shall deliver to each person supplied with a hearing aid a receipt which shall contain his signature, his business address and the number of his license; the specifications as to the make and model of the hearing aid furnished; the full terms of the sale, including the date upon which the hearing aid was supplied to the person; and the following statement: "Any person supplied with a hearing aid by a hearing-aid dealer licensed in this state has the right to return the hearing aid to the dealer from whom the aid was purchased within thirty days after receipt of the aid and rescind the purchase agreement except for reasonable fitting and examination charges if the person is dissatisfied with the hearing aid." If a hearing aid which has been previously sold at retail is sold, the receipt shall be clearly marked as "used" or "reconditioned," whichever is applicable, with terms of guarantee, if any.

Such receipt shall be in the manner and form as prescribed by the board in its rules and regulations. Such rules and regulations shall prescribe the type and size of print to be used in such receipt and the receipt shall set forth such additional information as the board may prescribe. A copy of such receipt shall be retained in the records of the licensee for a period of seven years following the issuance of such receipt.