In
sta
lla
ti
on
Installation
12
Video door intercom for single or multi-family residence with 3 main bus lines and indoor
video stations 1 7855, 1 7857, or handsfree video station 1 7835, 1 7845 with central power
supply and line distributor 1 4813
Block diagram:
Video door intercom for single or multi-family residence with 3 main bus lines, central power supply and line
distributor.
Note:
The block diagram and circuit diagram apply similarly for indoor video station 1 7855 and handsfree
video station 1 7835, 1 7845.
Note:
Manual picture activation is not possible with this circuit configuration.
Parallel operation is not possible with this circuit configuration.
B0111-0
a3
2x2+2
2x2+2
2x2+2
a2
2x2+2
2x2+2
2x2+2
2x2+2
2x2+2
2x2+2
2x2+2
2x2+2
a1
max. 12
max. 12
max. 12
2
ED
2
ED
2
ED
2
ED
2
ED
2
ED
1 4783
1 4753
1 4753
1 4760
RiTTO
8
2
1 7573
1 4874 1 4874
1 4813
1 6477
1 4874
UV
1 7857
1 7857
1 7857
1 7857
1 7857
1 7857
