All alarmed buildings not connected to a central station, a modified central station, or a licensed answering service shall be equipped with an external blue flashing light. Such light shall be of a type and quality specified by the Police Department to aid police helicopter and ground units in finding the alarm location. (Ord. 16739 § 2, 8-23-94; Ord. 16465 § 2, 6-9-92. Code 1995 § 62-98.)