Directed Electronics Python 990 Owner's Manual page 43

Example
If zone 3 was active or triggered, the LED will blink three times
with a two-second pause. Then it will blink three times again,
and repeat until the ignition is turned on.
note: Your system stores the last two triggered zones in
memory. If your system has been triggered but the LED
has been reset by turning on the ignition, your dealer can
still recall the last two zones that were triggered. Contact
your dealer for details.
c c o o d d e e h h o o p p p p i i n n g g
The receiver and transmitters use a mathematical formula called
an algorithm to change their code each time the transmitter is
used. This technology has been developed to increase the secu-
rity of the unit. The control unit knows what the next codes should
be. This helps to keep the transmitter "in sync" with the control
unit even if you use the remote control out of range of the
vehicle. However, if the remote has been pressed many times out
of range of the vehicle, or the battery has been removed, it may fall
out of sync with the control unit and fail to operate the system.
To re-sync the remote simply press
range of the vehicle. The alarm will automatically re-sync and
respond to the transmitters normally.
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several times within
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