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© 1997 Directed Electronics, Inc.
Remote Start Take Over
A vehicle equipped with this system can remain running after the key is
removed. This feature is useful for those times when you will be out of the
vehicle for short periods of time and would like to leave the motor running and
the climate controls on. Before turning off the engine:
1. Press Buttons 1 & 2 on the transmitter and release
(or press and release the optional momentary switch.)
2. Turn the ignition key OFF - engine will stay running.
3. The engine will run until the programmed time elapses or
shut down input is received.
NOTE: While the brake pedal is being pressed, this feature will not work
Nuisance Prevention Circuitry
TM
Your system has DEI's Nuisance Prevention Circuitry
™
(NPC
™
). It prevents
annoying repetitive trigger sequences due to faulty door pin switches or envi-
ronmental conditions such as thunder, jackhammers, airport noise, etc.
Here's how it works:
Let's say the alarm triggers three times. Each time, the same sensor or switch
is triggering the alarm. 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).
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 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 by-
passed 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 seem 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 on.
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Summary of Contents for 550HF
Page 1: ...MODEL 550HF OWNER S GUIDE...
