The AARC-EVAC™ ARX70-FB-R Standalone Wireless Linked Emergency Alert
Siren & Message Broadcast Units, incorporates an Internal Speaker, in-built
Battery Backup UPS, Flashing Beacons and Repeater Transmitter . They are
fully self-contained making them ideal for use in locations where there is no existing PA system, or to cover areas not
serviced by a PA system or as a full standalone network of units to provide for redundancy if the PA system fails for any
reason.