Every audible alarm system shall have a sign or notice posted on or near the device, posted conspicuously, with the name and telephone number of the person or company responsible for the maintenance of the system. The notice shall be posted in such a position as to be readable from the ground level outside and adjacent to the building. All silent alarm systems shall have a notice on the premises which provides the same information. (Ord. 5377-NS § 7, 1981)