ATI's ISU combines our highly configurable RTU with 400-Watts (Optional upgrade to 800-Watts) of audio output power for the delivery of reliable alert tone notification, pre-recorded messages and public address in emergency situations.

MNS systems typically cover large outdoor areas but it is also important to alert people inside the buildings. The ISU is a successor to ATI’s existing Indoor Speaker Unit (ISU) and offers customers more intelligent, flexible solutions to indoor MNS.

Indoor Speaker Unit (ISU) provides more flexible, intelligent end points in an ATI Mass Notification System. ATI currently provides the Indoor Speaker Unit (ISU) which can drive MNS speakers in buildings which do not already have a voice capable system installed. It is also becoming more common to interface to 3rd party equipment such as PA systems and voice enabled Fire Alarm Control Panels when they already exist in a building. In either case the ISU offers a modular, intelligent solution which can be configured for a wide range of in-building MNS requirements. The ISU takes full advantage of ATI’s Intelligent Control Gateway (ICG). The ICG provides a powerful control unit with a flexible set of interfaces including Ethernet, USB, serial ports and a variety of ATI specific interfaces. The 8-bit legacy CPU of older units is replaced by a 32-bit ARM based microcontroller with improved firmware including a modern IP stack for the Ethernet port as well as advanced encryption hardware.