Videx 4838 Range of Intelligent Speaker unit Modules

The 4000 SERIES is a new range of modular door panels

The new modules are available in the following versions:

• Audio Speaker Unit (4837-X series)
• Audio Intelligent Speaker Unit (4838-X series)
• Video Speaker Units (4832- series)
• Button Expansion Modules with Single Row Buttons (4842 to 4845)
• Button Expansion Modules with Double Row Buttons (4842D to 4845D)
• Codelocks (4800 and 4900)
• Proximity Reader Module (4849)

Intelligent Speaker Unit Front Panel Modules

The 4838 Speaker Units are a new introduction to the 4000 series and incorporate
microprocessor technology.
The 4838 Speaker Unit is the building block for the following types of system.
• Audio door entry systems with multiple entrances without the need of the
audio two entrance exchange (Art.502).
• Video door entry systems without the need of the control unit (Art.890) and
on multiple entrances, without the need of the video two entrance exchange
(Art.892).
• With an additional wire, allows for the inclusion of a local door bell (only on
system without privacy of speech) having a different call tone from the external
call.

The 4838 (in each version) has a dip-switch that allows for the adjustment
of the following settings:
- To set one of 4 different call tones.
- To set the number of rings.
- To set the conversation time.
- To set the door opening time.

In addition to conventional acoustic signals, the 4838 speaker unit gives visual
indication relevant to the system operation by the 4 LEDs on the front panel:

• The first LED (red) marked by the symbol , if switched ON, indicates
that it is not possible to make a call because a call or a conversation is in progress
(from the outdoor station from which you are calling or from another
outdoor station on system with multiple entrances).
• The second LED (red) marked by the symbol , if switched ON, indicates
that a call is in progress. The LED will be switched OFF when the call is
answered.
• The third LED (yellow) marked by the symbol , if switched ON, indicates
that it is possible to speak. The LED will be switched OFF at the end of
conversation (or at the end of the conversation time).
• The fourth LED (green) marked by the symbol , if switched ON,
means that the door lock has been operated. It will be switched OFF at the end
of the “door opening” time.
As a result of the above features, the 4838 speaker units provide a cost effective
solution with more features and, at the same time simplify installation.

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