The new columns of the C400-EN range feature loudspeakers with a broad response range and high-efficiency tweeters enabling perfect intelligibility of speech and accurate reproduction of music. These speaker units have been developed specifically for use in emergency and evacuation systems (VES) and each has its own ceramic terminal strip and thermal fuse. These ensure the protection of the line connecting the loudspeakers if a fire puts one or more of the speaker units connected to it out of use. This speaker units are fittied with fireproof cable according to UNI 9795 2010 (length 80 cm). These columns can be turned in any direction thanks to the S4-B swivel joint included in the supply.