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TrueAlert notification appliance operation provides power, control, and supervision of horns and
strobes over a single pair of wires. The controlling TrueAlert channel digitally communicates with
each appliance and receives a response to verify the appliance’s presence on the channel. When
required, the TrueAlert channel provides a digital command to control appliance operation.
(Typical operation would be for both horns and strobes to be initially activated upon alarm and
then, when desired, horns can be silenced while the strobes continue to flash. When the alarm
condition is over, both appliance types can be de-energized.)
Due to the supervision provided, TrueAlert notification appliances can be wired in a Class B
(Style 4) configuration without requiring traditional in/out wiring methods. Both separate branch
wiring and T-tapping are allowed in these cases. Class A (Style 6) operation does require
traditional in/out wiring methods. Up to 63 appliances can be supported on a single TrueAlert
channel.
Each TrueAlert notification appliance contains an electronic module and a selectable address
setting (in addition to its notification appliance) that allows it to occupy a unique location on the
TrueAlert channel. This on-board module also allows the TrueAlert channel to perform appliance
diagnostics that assist with installation and subsequent test operations. A visible LED at each
TrueAlert appliance can be set up to provide verification of communication, and flashes with the
appliance’s address setting when locally requested using a magnetic test tool.
Introduction to TrueAlert
Overview
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