221
(MT11 - Gb2012)
4+1
INTERCOMS *
7+1
VIDEOINTERCOMS
Installation of 1281E power supply-timer in ONE-WAY systems with intercommunicating service
In order to have the intercommunicating service amongst intercoms and/or videointercoms with privacy towards the external station, it is necessary
to install inside 1282E timer the 1443E intercommunicating module. If the installation has to use 1281E power supply-timer it is necessary to add,
and properly connect, a 2443 relay-amplifier and a PRS240 power supply (see schematics).
Floor call
In all the installation schematics it is possible to have a floor call with different sound from the one coming from the push button panel, by adding
a conductor to the riser connected to all the buttons of the floor calls. The other terminal of each button has to be connected to the user intercom
or videointercom.
Connection of the floor call on an installation with 1281 power
supply and 1282E timer.
Connection of the floor call on an installation with 1281E power
supply-timer
Application on all one- or multi-way systems with one or more
main entrances. Schematics from page 189 to page 203.
Application on all multi-way systems with main and secondary
entrances. Schematics from page 205 to page 217.
When in the installation 1281E power supply-timer is foreseen, in order
to have a differentiated chime, add GN30 ringer generator.
Additional diagrams
B
14
2
13
13a
12a
F
1
2443
PRS240
230V
127V
0
230V
127V
0
1281E
7
5
C+
X
H
F
S
3+
A
4
230V
127V
0
1281E
X
S
H
F
C+
5
A
4
3+
B
14
3
12
12a
13a
F
1
2443
PRS240
230V
127V
0
7
1282E
7
CP
3A
9A
0
9R
9
FP
FP
FP
FP
ST720+
SM50E+
ST704
Exhito
Compact
Echos
Studio
Studio
Studio
Exhito
Compact
Project
CP
3A
9A
0
9R
9
FP
FP
FP
FP
ST720+
SM50E+
ST704
Exhito
Compact
Echos
Studio
Studio
Studio
Exhito
Compact
Project
1281E
S2
GN30
F
A
Intercom with
private conver-
sation
Floor
push-button
Floor
push-button
Floor
push-button
Floor
push-button
Floor
push-button
Floor
push-button
Floor
push-button
Floor
push-button
Intercom with
private conver-
sation
