Chapter 1: System operation
14
Vigilant VS1 and VS2 Technical Reference Manual
Item Description
7
Cabinet enclosure: Houses the panel electronics and standby
batteries. In some cases, the batteries may be housed in an
external battery cabinet (BC-3).
8
Operator interface: Includes operator controls, LED indicators,
and control buttons
9
Loop expander card connector (J14): Provides a connection for
the optional loop expander card (only on the 250/500 point
panel)
10
Class A card connector (J2): Provides a connection for the
optional Class A card (only on the 64 point panel)
11
Tie wrap mounts: Used to secure wires and to help maintain
proper separation between power-limited and nonpower-
limited conductors
12
LED expander connector (J6): Provides a connection for the
optional LED expander
13
Standby batteries: Provide secondary/standby power to the
panel electronics in the absence of primary power