In
sta
lla
ti
on
Installation
10
Installation
Door intercom for single or multi-family residence
Each residential unit can be accessed separately from the main entrance. The doorbell for the apartment door is con-
nected directly to the indoor telephone. Incoming calls from the door station and the apartment door (ED) are auto-
matically indicated by different ringing tones. The door opener (TO) at the main entrance can be actuated from all the
indoor telephones.
Block diagram:
Door intercom for single or multi-family residence.
* Please note the red mark – see “Bus connections in the door station” on page
☞
16
.
Circuit diagram:
Door intercom for single or multi-family residence.
B0089-3
4
1 7573
2
RiTTO
a3
2
a2
2
2
2
2
2
2
a1
RiTTO
1 4760
1 4753
1 4753
2
ED
2
1 7630
ED
2
1 7630
ED
230 V
1 7650
1 7230
2
ED
S0089-3
11
21
a3 b
N
L
4
3
2
1
1 2 3 4
a3
a2
a1
ED
ED
b
a
ED
ED
ED
b
a
ED
ED
ED
b
a
ED
ED
ED
b
a
ED
a2 b
a1 b
1 7573
1 4760
RiTTO
1 4753
1 4753
1 7650
1 7630
1 7630
1 7230
