Notification Appliance Circuit Module Description | en 5
Bosch Security Systems, Inc. Installation manual 2020.05 | 04 | 4998122260
Figure2.1: D192G_NAC_Module
1 Power from the control panel’s AUX
POWER
6 Negative (-) connection to UL 864
certified power supply
2 Connection to control panel’s
COMMON circuit ground (see Warning
below)
7 Positive (+) connection to the signaling
device loop
3 Connection to control panel zone
output
8 Negative (-) connection to the
signaling device loop
4 Connection to control panel’s
programmable alarm outputs
9 Toggle switch for silencing the
indicating devices
5 Positive(+) connection to UL 864
certified power supply
10 Mounting holes
Warning!
The D192G common (COM) terminals are digital ground, not earth ground. A ground fault
condition exists when the COM terminals are connected to earth ground.