Directed Electronics Matrix 2 Owner's Manual page 9

The system also can be programmed to arm itself automatically
(called passive arming). If the system is programmed for passive
arming, it will automatically arm 30 seconds after the ignition is
turned off and the system "sees" you leave the vehicle by opening
and closing a door. Whenever the system is in its 30-second
passive-arming countdown, the status LED will flash twice as
fast as it does when the system is armed. The siren will chirp
once 20 seconds after the last door has been closed. The system
is not actually armed at that point. The system arms and the
doors lock (if connected and programmed for passive locking) at
30 seconds, but the siren will not chirp. The early chirp provides
you with a 10-second warning prior to arming.
note: If any protected entry point (such as a door or a switch-
protected trunk or hood) is open, the system will not
passively arm (unless forced passive arming is programmed
on.) See Programming Options section of this guide.
Additionally, each time a sensor is triggered during the
arming countdown, the 30-second countdown starts over.
When armed, your vehicle is protected as follows:
➤ ➤ Light impacts will trigger the Warning Zone signal. When
triggered, the siren will chirp and the parking lights will flash
for a few seconds.
➤ ➤ Heavy impacts will trigger the system. The triggered
sequence is between 1-180 seconds of constant siren and
flashing parking lights.
➤ ➤ If a door is opened, the system will immediately start
chirping the siren and flashing the parking lights. Three
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