4
(MT12 - Gb2004)
I
NTERCOMS *
V
IDEOINTERCOMS *
T
ELECOMMUNICATION
PT520. Two-colour intercom for 4+1 systems
connected to one or more door stations. Com-
plete with buzzer, spiral cord, electronic micro-
phone and two push-buttons that can be in-
creased to 10 by adding the individual push-
button unit, art.PT501. It can be installed on the
wall with screws or on a back box.
PT520W. Colour: white.
Terminals
1 microphone
2 loudspeaker
3 ground
5 door release push-button (max 1A)
6 buzzer (0.2A)
7 common push-buttons (
and 1)
9 electronic bell input
P1 service push-button (max 1A)
P2 ÷ P9 service push-buttons (max 0.5A)
INTERNAL STATIONS
INTERCOMS PROJECT series
Fittings for PT520 and PT520W intercoms
PT501. Individual push-button unit.
Note
We recommend to insert the LED module PT502
and bell silencer module PT515 in the bottom 2
slots marked by and .
To insert them properly it's necessary to remove
the guide of the button sliding from the internal side
of the base cover (see figure).
PT502. Led module.
PT515. Bell silencer module (privacy).
P2
P7
P9
P8
2
W1
1
7
L+
L-
RL 36. Relay module. When installed inside
intercoms it allows to activate additional bells
(see page 27). Maximum switching current is
1A (24V).
Terminals
C common terminal of relay
NA normally open contact of relay
NC normally closed contact of relay
- ground
13Vac/dc voltage input
EC relay activation input (ground command)
Wires
9 electronic call input without resistive load
3 ground
call push-
button
intercom
P
R
O
J
E
C
T
3
"
8
/
3
2
8
"
"
16
16
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13
1
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