External Siren (Bell Box) Output - Honeywell Accenta Series Engineer's Manual

Accenta/Optima Engineer's Manual

External Siren (Bell Box) Output

The external siren (bell box) is usually installed in a high position from where the siren could be seen and
heard.
Terminal TADB are for connection to the external siren. These terminals provide a power/hold-off supply,
sounder trigger and tamper circuit to protect the external siren housing.
The terminals are summarised as follows:
T = Negative (-Ve) tamper return
A = Negative (-Ve) supply (0V)
D = Positive (+Ve) supply (12V)
B = Negative (-Ve) Sounder trigger
For ease of installation, the Optima/Accenta control panels and Reson8 external sirens and modules use the
same markings.
Where a discrete external siren is used, it should be connected to terminals D and B. Terminals T and A are
then used for tamper protection for the housing.
Panel
Board
J6
+
T
TROBE
+
BATTERY
Board
Reson8
Figure 11. External Bell-box Wiring
F3
ET
D B
A
BELL
CB
1A
+
+
RTN HOLD TB
TRIG
OFF
T D A B
9
Bell Box