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The Simplex 4003 (Figure 1) is a microprocessor-based, single-channel,
voice/tone generator (VTG) with microphone input capability. It is UL listed,
electrically-supervised, and protected against loss of primary AC power and
brown-out conditions.
The 4003 Voice Control Panel (VCP) provides voice and tone generation, 75W
of amplifier power, four supervised notification appliance circuits, and satisfies
multiple application requirements. Automatic stand-alone operation is
application-dependent and easily selected by internal programming DIP
switches.
A second four-circuit NAC card can be installed in the 4003 to control DC
notification appliances. Installation of this card allows visible notification
appliances to remain activated after audible notification circuits are silenced.
Figure 1. Simplex 4003 Voice Control Panel
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System Overview
Introduction
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