"Alarm Systems" means any mechanical or electrical/electronic or radio controlled device which is designed to be used for the detection of any fire or unauthorized entry into a building, structure or facility, or for alerting others of fire or of the commission of an unlawful act within a building, structure or facility, or both, which emits a sound or transmits a signal or message when activated. Alarm systems include, but are not limited to, direct dialing telephone devices, audible alarms and monitored alarms. Excluded from the definition of alarm systems are devices which are designed or used to register alarms that are audible or visible and emanate from any motor vehicle; auxiliary devices installed by telephone companies to protect telephone systems from damage or disruption of service; and self-contained smoke detectors; and medic-alert alarms.
