S.C. Code Ann. § 40-79-310: Exceptions from application of chapter.

The provisions of this chapter do not apply to:

(1) an entity that designs, sells, manufactures, or distributes alarm systems or products unless the entity sells, markets, services, or installs alarm systems at a client's residence or business;

(2) an entity that owns and installs an alarm system on property owned or leased for itself;

(3) any alarm device which is installed in a motor vehicle, aircraft, or boat;

(4) battery-powered or one hundred ten volt smoke detectors;

(5) a mechanical contractor who holds an electrical contractor's license and designs, installs, and services a fire alarm system;

(6) anyone that responds to burglar alarm or fire alarm systems; and

(7) camera, card access, or walk-through alarm systems.