A key feature of the Sentry system is that in the event of an alarm, it will pinpoint the
source of that alarm through a zoning technique incorporated into the design of the
system. In office buildings, complex institutional facilities, long tunnels, and public
parking garages, for example, the benefit of this feature is obvious. Where appropriate, an
audible alarm can act as a deterrent, signaling all involved that an alarm has been
triggered and help is on the way.