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©
2001 Directed Electronics, Inc.
Here’s how Nuisance Prevention Circuitry works: The alarm triggers
three times. Each time, the same sensor or switch is triggering the
alarm. The three triggers activate within 60 minutes of each other.
NPC will interpret this pattern of triggers as false alarms. After the
third trigger, NPC bypasses that sensor or switch (along with any
other sensors or switches sharing the same zone) for 60 minutes.
If the bypassed sensor attempts to trigger the system while it is
being bypassed, the 60-minute bypass period will start over. This
ensures that a sensor that continuously triggers will remain
bypassed.
Doors are covered by NPC differently: If the alarm is triggered by
an open door for three full cycles (one-and-one-half minutes), the
doors will be bypassed until the trigger ceases.
NOTE: Arming and disarming the system does not reset this function! The
only ways to reset a bypassed zone are for it to not trigger for 60
minutes, or to turn on the ignition. If testing your system, it is important
to remember that the NPC programming can cause zones to be bypassed
and appear to stop working. If five chirps are heard when disarming, NPC
has been engaged. If you wish to clear the NPC memory, turn the ignition
key on.
NPC is programmable. See the “Programming Options” section of
this guide.
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