NEMA SB 40:2015

This standard covers the application, installation, location, performance, and maintenance of school emergency communications systems and their components. PURPOSE The purpose of this standard is to define the means of signal initiation, transmission, notification, and annunciation; level of performance; and the reliability of various types of school communication systems. The standard also defines the features associated with these systems. This standard establishes minimum required levels of performance, extent of redundancy, and quality of installation, but does not limit the methods by which these requirements are to be achieved.