Document: LT0554
Vigilant BOWS Installation & Operation Manual
Issue 1.20
6 September 2012
Page 1-1
The VIGILANT Building Occupant Warning System (BOWS) is a self-
contained AS 2220 or ISO 8201 Alert and Evacuate tone generator, with
integral power supply, speaker line supervision, digitised speech
messages and PA microphone. It has been designed to connect directly
to a fire alarm panel, but can be alternatively used stand-alone.
A block diagram of the BOWS is shown in Figure 1.
Figure 1. BOWS Block Diagram
The BOWS has a microphone for emergency public address, fault and
status indicators, and an Evacuation Control key switch to select its
operating mode. It has audio inputs for background music, remote audio
(which can be used when streaming audio over IP networks), and non-
emergency paging (zone-selective with an add-on option).
The BOWS has a 24V 5A power supply / battery charger compatible with
17Ah batteries.
Chapter 1
Introduction
Introduction
EOL
T-GEN 50
Alert and
Evacuate tone
generator
24V 5A Power Supply
BOWS
Interface
Board
Batteries
(typically 2 x 12V 17Ah)
2 x 12V 6.5Ah, 12Ah or
17Ah
Emergency
PA Mic
100V Speaker
Line
Alarm (& fault back)
Remote Audio
Background Music
EOL
Paging (optional)
