Simplex TrueAlert 4009-9401 Installation Manual page 12

The 4009 TrueAlert Addressable Controller,
Overview, continued
The Hardwired NAC Interface uses two conventional NACs from the host FACP. One NAC is
used to enable operation of the strobe appliances (so that they are On Until Silenced), and a
second NAC is used to enable operation of the horn appliances (so that they are On Until Reset).
All three SLC channels of the TrueAlert Addressable Controller are controlled together.
Diagnostic features are enabled and disabled via DIP switches in the panel. Up to four hardwired
TrueAlert Addressable Controllers can be used with a single host panel (see Field Wiring
Diagram 842-158).
Alternatively, the first of the two host NACs can be set up to control audible and visible output for
TrueAlert SLC Channel 1, while the second host NAC controls audible and visible output for
TrueAlert SLC Channels 2 and 3. With this type of operation, there is no individual control of
audibles and visibles.
For any of the described applications, the TrueAlert Addressable Controller can minimize
transmission line losses associated with sending large currents for notification appliances long
distances within buildings. In a fire alarm system with the TrueAlert Addressable Controller, a
power supply and batteries for notification appliances are located near the actual notification
appliances, saving system power and battery capacity while minimizing line losses.
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