It shall be unlawful to operate an audible alarm system which does not shut off within a maximum of thirty (30) minutes from the time of activation. Shutoff may be accomplished either with an automatic cutoff or by manual operation. If the alarm system has an automatic cutoff with a rearming phase, the rearming phase must be able to distinguish between an open and closed circuit, and if the circuit is broken, the system will not rearm. (Ord. 335, 1-28-2003)