SYSTEM CHARACTERISTICS
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Brightness and contrast control
Different call tones which identify the call procedure (door panel or apartment door
Input for external door bell push button
With T7822VD
telephone
Total
private conversation
Contact free auxiliary push button for activating auxiliary devices
Voltage free contact (Max. current: 40mA
Three-position control for call volume maximum, medium and off
Different call tones which identify the call procedure (door panel or apartment door
SYSTEM OPERATION
To make a call the visitor should press the push button corresponding to the apartment he / she wants
to contact
: Some
has been pressed At this moment the call will be received at the monitor (telephone) in the dwelling
During the call the visitor can correct his / her call by pressing the push button corresponding to the
desired apartment, cancelling the original call
The call tone lasts for 45 seconds. Unknown to the visitor, his/her image is displayed on the master
monitor just a few seconds after the call is received To see the image on a slave monitor press the
push button. This will cause the image on the other monitor to disappear If the call is not answered in
45 seconds, the system will be freed
To establish communication pick up the monitor (telephone) handset
The communication will last for 90 seconds or until the handset is replaced Once the
communication has finished the system will be freed
To open the door, press the door release push button during call or communication progresses with
one press, the lock release is activated for 3 seconds pressing once the push button
The description of the function push buttons is shown on pages 96 and 100.
(color control in case of color screen).
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acoustic tones will be heard confirming the call is in progress once the push button
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