Installation guide

VAR4 / VAR12 / VAR20 - Product Description
1 Introduction
This document gives an overview on the application, features, interfaces, and functions of the ASL family of
DSP-based Audio Router and Voice Alarm System controllers: the VAR4, VAR12 and VAR20. They are
referred to generically as ‘VAR Router’ in this document. This document contains no definite instruction for
action:
• The operation is described in the Operation Manual.
• The installation is described in the Installation Guide.
The document is intended for the use of technical readers who have an understanding of Voice Alarm
Systems and who are trained in general electronics.
Issue: 03 complete, approved
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