"Alarm system" means any device, whether known as a burglary, robbery or intrusion alarm, direct dial telephone device, fire alarm, audible or silent alarm, or by any other name, which is used for the detection of an unauthorized entry into a building, structure or facility, to signal the commission of an unlawful act, or to detect smoke, heat or particles of combustion. It shall include those devices which emit a signal within the protected premises only, are supervised by the proprietor of the premises where located, and are otherwise known as "proprietary alarm systems." Auxiliary devices installed by a telephone company to protect telephone company systems which might be damaged or disrupted by the use of an alarm system are not included in this definition.
(Ord. 49 § 2, 1979; Ord. 145 § 3, 1987)