
Duress This is a 24h zone type: in the event of an alarm it will disarm the system
(silent attribute), and at the same time activate the communicator and dial-
ler. This zone may be used for the connection of a "Silent alarm" button.
Fire This is a 24h zone type, Normally Open (N.O. attribute) which can be used
for fire sensor connection.
Command zones
Arm partitions Violation or tamper of an Arm partitions zone will arm the partitions the
zone is assigned to.
Switch partitions Violation or tamper of a Switch partitions zone will switch the status of the
partitions the zone is assigned to (armed areas will be disarmed and vice
versa).
Attributes
Select the zone attributes from the 5 options in the "Attributes" section.
Double Pulse This attribute will lower the sensitivity of the zone, as it doubles (from 300
to 600 msec.) the minimum alarm pulse time required by an alarm zone for
alarm condition detection.
Unbypassable Unbypassable zones cannot be bypassed.
Chime Violation of a Chime zone, during disarmed status of one of its partitions,
will activate the CHIME outputs of the partition the zone is assigned to.
Test Violation of a Test zone will not activate the signalling devices, the digital
communicator or dialler, and the Zone Alarm events will not be logged.
Silent Violation of a Silent zone will activate the telephone communicator only.
The alarm output will not be activated, and violation will not be signalled on
the keypad.
Balance types
Select the zone balance type from the 4 options in the "Balance types"
section. An alarm zone will signal violation when the electrical conditions of
its selected balance type are present on the corresponding input terminal
for at least 300 milliseconds.
+
See also Double Pulse option.
Normally Closed The zone will be connected to negative (closed) during Standby status.
The control panel will detect violation when the zone disconnects from
negative (opens).
Normally Open The zone will be open during Standby status. The control panel will detect
violation when the zone switches to ground (negative).
42 Security System Control Panels Omnia8/4
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