"Early fire warning system" shall mean a smoke detector or other approved automatic warning system of one or more devices that detects any of the products of combustion including visible or invisible particles of combustion and that produces an audible alarm signal in a building for the purpose of notifying the occupants thereof of the presence of a fire. The primary power for such system may be either an AC electrical system or a monitored battery. Systems with detectors sensitive to heat only are not included in this definition for purposes of this chapter.
   For the purpose of installation and maintenance only, a system shall be deemed approved if listed by the Underwriters Laboratories, Inc. and conforms to the applicable sections of NFPA Standard No. 74-1975 titled Standard for the Installation, Maintenance and Use of Household Fire Warning Equipment."
(Ord. 92-6.  Passed 5-18-92.)