Installation Instructions

20
|
Connecting power | NSS Installation Manual
External alarm
Blue wire on power cable:
An external alarm can be connected to one or more displays on the network. The external
alarm can be a small peizo buzzer connected directly, or a horn siren connected via a relay.
Alarms are con gured globally in the system i.e they can be con gured on one display and
seen, heard and acknowledged from all displays. How ever the external alarm siren can be
enabled or disabled on individual displays. For information on con guring alarms, refer to the
Alarms section in the Operation manual.
12 - 24 V DC
1 A max
35 V DC max
Red (FUSE)
Black
Yellow
+
_
Blue
For sirens that draw more than 1 Amp use a relay
12 - 24 V DC
Red (FUSE)
Black
Yellow
+
_
Blue
External Alarm Setup
The SIREN ENABLED option must be set in order for the unit to drive the external alarm when
an alarm condition arises.