S.C. Code Ann. § 56-5-6450
No person shall be subjected to a custodial arrest for violation of the provisions of this article. Any person violating the provisions of this article shall upon conviction be fined not more than twenty-five dollars. The court shall waive any fine against any person who, before, or upon the appearance date on the summons, supplies the court with evidence of acquisition, purchase or rental of a child restraint system meeting the requirements of this article.