【正文】
Loudspeakers 2022 series Beacons ?EExd and EExde ATEX certified ?IP 66 Ingress Protection ?Xenon and Fluorescent variants Federal Signal Acoustic Hood ? Hydroscopic noise absorption wool ? Perforated lining ? 14db noise reduction ECHO Digital Inter/PA/Alarm system ECHO System Features ? Hands Free Operation ? Private Duplex Communication, non blocking ? Speed Dial, ReDial ? Call Forward, Call Transfer ? Pre programmed 5 and 3 station simultaneous conference groups, accessed on single digit ? Priority programming ECHO System Features ? Message Facility ? Group Page, All Call Page, Priority Page ? Conference Call ? Alarm and pre recorded message broadcasting ? PABX interface, PA Interface, Radio Interface ? System status and faul