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© 1990, 1996 Directed Electronics, Inc.
Let's say the alarm triggers three times. Each time, the same sensor or switch
triggers the alarm. If the three triggers are within 60 minutes of each other,
NPC will interpret this pattern of triggers as false alarms. After the third trig-
ger, NPC ignores, or bypasses, that sensor or switch (along with any other
sensors or switches sharing the same zone) for 60 minutes. If the bypassed
sensor tries to trigger the system while it is being bypassed, the 60-minute
bypass period will start over. This ensures that a sensor that continuously trig-
gers will remain bypassed. Doors are covered by NPC differently: If the alarm
is triggered by an open door for three full cycles (one and a 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 impor-
tant to remember that the NPC programming can cause zones to be bypassed and seem to stop working.
If five chirps are heard when disarming, NPC has been engaged. If you want to clear the NPC memory, turn
the ignition on.
