Appendix A: Panel specifications 
192  Vigilant VS1 and VS2 Technical Reference Manual 
Control panel specifications 
  VS1 panel  VS2 panel 
Device loops  1 loop Class B or Class A (Styles 4, 6, 
7) supporting up to 64 device 
addresses (any combination of 
detectors and modules) 
Maximum T-taps: 63 (each device 
can be on its own branch) 
1 loop, expandable to 2, Class A or B 
(Styles 4, 6, 7), each loop supporting 
up to 250 device addresses (125 
detectors and 125 modules max.). 
Note: Addresses 1 to 125 are for 
detectors and addresses 126 to 250 
are for modules.Maximum T-taps: 
124 
Notification appliance 
circuits 
2 Class B (Style Y), Class A (Style Z) 
optional 
3.75 A FWR total at 120/230 VAC 60 
Hz 
3.0 A FWR total at 230 VAC 50 Hz 
2.5 A FWR each max. per circuit 
4 Class B (Style Y) or 2 Class A (Style Z)
6.0 A FWR total at 120/230 VAC 60 Hz
5.0 A FWR total at 230 VAC 50 Hz 
2.5 A FWR each max. per circuit 
Primary power  120 VAC, 60 Hz, 1.3 A max. 
230 VAC, 50-60 Hz, 0.6 A max. 
120 VAC, 60 Hz, 1.8 A max. 
230 VAC, 50-60 Hz, 0.975 A max. 
Base panel current 
standby 
155 mA  172 mA 
Base panel current 
alarm 
204 mA  267 mA 
Input zones  16 max.  32 max. 
Remote annunciator  8 drops max., RS-485 Class B,  
Class A optional 
Data line length: 4,000 ft. (1,219 m) 
8 drops max., RS-485 Class A or B 
Data line length: 4,000 ft. (1,219 m) 
Operating voltage  24 VDC 
Auxiliary power output 
circuit 
Aux power 1: 500 mA, 24 VDC 
Aux power 2: 500 mA, 24 VDC (1 A possible if you reduce total available NAC 
power by 500 mA) 
Output: 28.3 to 21.9 VDC, special application 
Note: For a complete list of devices that can be connected to this circuit, see
the Vigilant VS1 and VS2 Series Compatibility List (P/N 3101065).