Chapter 1: Installation and wiring 
Vigilant VS1 and VS2 Technical Reference Manual  7 
Figure 7: Panel low voltage wiring 
TB1
EGND
24 VAC
IN
 
Battery wiring (TB8) 
Caution: Connect and disconnect standby batteries only with the AC power applied. 
The control panel has a 24 VDC rechargeable battery circuit that is capable of 
charging up to two 26 Ah sealed lead acid batteries. 
The table below lists the batteries that can be installed in the control panel cabinets. 
Up to two 10 Ah batteries will fit in the VS1 control panel cabinet and two 18 Ah 
batteries will fit in the VS2 point control panel cabinet. If larger batteries are required, 
you must use a GE Security battery cabinet. To determine which battery the system 
requires, use the “Battery calculation worksheet” on page 196. 
Table 3: Batteries for EST iO64 and iO500 panels 
Model Manufacturer Rating 
12V4A  GS Battery, Inc.  12 volts, 4.5 Ah 
12V6A5  GS Battery, Inc.  12 volts, 7.2 Ah 
12V10A  GS Battery, Inc.  12 volts, 11 Ah 
12V17A  GS Battery, Inc.  12 volts, 18 Ah 
12V24A  GS Battery, Inc.  12 volts, 26 Ah