(a) In this section, "personal emergency response system" means an alarm system that is:
(1) installed in the residence of a person;
(2) monitored by an alarm systems company;
(3) designed only to permit the person to signal the occurrence of a medical or personal emergency on the part of the person so that the company may dispatch appropriate aid; and
(4) not part of a combination of alarm systems that includes a burglar alarm or fire alarm.
(b) This chapter does not apply to:
(1) an alarm systems company that sells, installs, services, monitors, or responds to only personal emergency response systems;
(2) an alarm systems installer who installs, maintains, or repairs only personal emergency response systems; and
(3) an owner of an alarm systems company described by Subdivision (1).