The AARC-EVAC™ ARX82, ARX83 & ARX84 Standalone Wireless Linked Emergency Alert Siren & Message Broadcast
Units, incorporates an in-built 110-240V Din Rail mounted Power Supply and Battery Backup UPS. 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 part of a full standalone network of units to provide for redundancy if the PA system fails for any
reason.