The 4E-SW6 switch module routes evacuation and / or alert messages, location and music announcements (BGM) to six lines of loudspeakers. Adding more 4ESW6 switch modules adds to the system the ability to get any multiple of six speaker lines, grouped into virtual zones / groups. By adding end-of-line (EOL) modules to the loudspeaker lines, the 4E-SW6 monitors and detects faults as indicated in the EN 54 standard. Dimensions 65 x 90 x 118 mm.