Videx KRA76, Manual

66250930 - V4.0 - 15/05/19

- 1 -

Kristallo Series

Art. KRA78-KRA76 - Installation instructions

29

63

42

106

182

A

D

E

C

B

Fig. 1  

Art. KRA76 front

71

190

8

39

189

70

A

D

C

B

Fig. 2  

Art. KRA78 front

SW1

O

N

DOL

SB

AL

LB

L

_

12Vin

F

G

Fig. 3  

Art. KRA78 back

DESCRIPTION - DESCRIZIONE

Intelligent Hands free intercom for the VX2200 digital system 

with touch sensitive buttons for “door open/concierge call”, “an-

swer/camera recall”, “privacy” and “service” plus 4 buttons for 

volume adjustment and programming plus 4 LEDs related to the 

intercom operation. For the surface version only (Art. KRA76), a 

handset can also be used in addition to the handsfree mode.

The following programmable options are available:

•  Call tone volume.

•  Speech volume.

•  Intercom address (from 1 to 180).

•  Privacy duration (from 30 minutes to 20 hours or unlimited).

•  Call melodies (9 available).

•  Number of rings (from 1 to 9).

•  Intercommunication mode/ Extension ID (from firmware release 2.0 and later).

Additionally the Kristallo has an input for local door bell and alarm.

LEGEND

A

 Microphone

B

  Operating buttons and LED’s

C

  Adjustment buttons

D

 Speaker

E

 Handset

F

  Connection terminals

G

  8 way dip switch bank

PUSH BUTTONS AND CONTROLS

•  Press this button during an incoming call to open the speech in half duplex mode allowing free speech with the caller 

in both directions (The related LED will illuminate).

•  During a conversation, momentary operation of this button will end the call. The LED next to the button will switch 

off. The system will automatically switch off when the conversation time expires.

•  Press and hold this button (more than 1 second), during an incoming call or a conversation in progress, to allow the 

user to answer a call from a visitor at the door station in SIMPLEX speech mode (The related LED will flash rapidly): 

releasing the button will allow the user to listen to the visitor (The LED will flash slowly). Press and hold the button 

when you talk to the visitor and release the button when you listen to the visitor.

•  When the system is in standby, (No calls on the system) operation of this button will open the speech to the door 

station (Only when the recall facility is enabled). The related LED will illuminate. Press as many time as the ID value of 

the door panel to connect to.

•  During a conversation, operation of this button will release the door from where the call originated. This will be con-

firmed by an acoustic tone. If terminal 

DL

 is connected, the “door open” LED next to the button will also be illuminated.

•  When the system is in stand-by, a button press will book a call to the concierge (If available)
•  When the system is in stand-by, press this button to enable the service for the programmed time: the related LED will 

illuminate to signal the service enabled. During an incoming call, with the service enabled, the device does not emit 

any acoustic signal. The service is disabled when the programmed time expires or pressing again the button.

•  When the system is in stand-by, keep pressed this button until the unit emit a beep and the related LED switches ON 

to enter to privacy duration programming menu.

Art. KRA78-KRA76 

 Handsfree intercom

Rev.0.2