Limitation Of False Alarms; Types Of Alarms - jablotron JA-10 Series Manual

8.4.3 Limitation of false alarms

In installations with an increased risk of false alarms special reaction types can be used:
Confirmed intrusion reaction – if in a set section a detector with confirmed reaction is activated, the system
only reports an unconfirmed alarm to the ARC and waits for confirmation by another detector. The alarm may be
confirmed by any intrusion detector in a set section. In the Parameters tab you can define whether the
confirmation can come from any set section or it must be from the same section. You can also set the time for
which the system waits for confirmation by another detector in the Parameters tab (up to 60 min). If the alarm is
not confirmed within the pre-determined period of time, no alarm is released. If a confirmed delayed reaction is
set, activation of a detector only initiates sending of an unconfirmed alarm after expiration of the entry delay.
Confirmed reaction can only be used if a higher number of intrusion detectors are installed in the building (to
enable confirming).
Confirmed fire reaction – if a fire detector with this reaction is activated, only an unconfirmed fire alarm is
reported to the ARC and the system waits for confirmation of the fire by another fire detector. In the Parameters
tab you can define whether the confirmation can come from any section or it must be from the same section.
The time period of waiting for confirmation of a fire alarm is set in the Parameters tab. If fire is not confirmed
within the pre-determined period of time, no fire alarm is released. Confirmed reaction can only be used if
a higher number of fire detectors are installed in the building (to enable confirming).
Warning: This function and its use have to be taken seriously in accordance with a local requirements
and norms.
Three-strikes function (3× and STOP!) - all detectors with an activated alarm reaction of the intrusion and fire
type are limited to three possible activations of the control panel during one monitoring period at the most. After
three activations (on the fourth intrusion) a bypass is activated for the respective alarm input and the
corresponding sensor is excluded from further activity. If these three activations occur during an alarm, three
alarm SMS messages are generated altogether and then the detector is disabled. If these three activations
occur in time intervals that are longer than the duration of an alarm, three alarm SMS messages are generated,
three alarms are triggered and then the detector is disabled.
Delayed report to ARC – According to the EN 50131-1 norm requirement to reduce the number of false alarms
caused by end user invalid operation of the system and security agency intervention. When enabled, an Internal
alarm (sirens, keypad indication) will be triggered after the entrance delay has timed out, but the system waits
for 15 s to send an alarm report to the ARC. A user has 15 s more to unset the system without triggering an
alarm reported to the ARC. If he does it in time, nothing will be reported. This delay is only related to an alarm
triggered by a delay zone. Other alarm types (instant, fire, tamper, etc..) are reported immediately with no delay
regardless of this function.

8.5 Types of alarms

The main reason for the security system is to report events to its owner and users or a professional security
agency to inform about threats. It could be intrusion by a burglar but also some environmental effect such as
smoke, fire, gas leakage, flooding in the protected premises. Indication of every type of alarm can be different
according to its cause. For sirens alarms are split into internal (IW) and external (EW).
All types of system sirens sound with an intermittent tone (optional continuous or intermittent) and outdoor siren
flashing is done by a red or blue light (flasher). Indication length is given by the alarm length time parameter in
the control panel. Every siren has its own settings like alarm length limitation, thanks to this you can pre-set
a shorter time of alarm indication by the external siren than by the internal one. Every alarm (except silent panic
alarm) has a beginning and an end (expiration or cancelling by user) and with the cause of event
it is recorded to the events with a time stamp.
On all system keypads, all alarms (except silent panic alarm) are indicated by red flashing of the system
indicator with a continuous acoustic indication.
JA-14K(R) Security System Control Panel 27 / 72 MNX22101