bellagio Digital Entry System
PD
–
281 Issue 1
Installation and Operating Manual
Page 32 of 52
DBA-4I 4 Way Phone Isolator
The DBA-4I Isolator is used to distribute wiring to up to 4 flats, whilst providing isolation
between flats. This isolation ensures that a cable fault within one flat will not stop phones
within other flats functioning.
There is a maximum of 2 phones in each flat. Adding a 2
nd
phone / extension phone
reduces the maximum number of flats that can be powered from the same Power supply.
Isolator PCB’s are normally supplied in an individual ABS plastic enclosure, but can be
supplied in multiples in a lockable IP55 Steel cabinet (with or without power supplies). All
control equipment must be placed in a protected indoor environment.