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© 1996 Directed Electronics, Inc.
Code Hopping
™
Explained
The receiver and transmitters each use a mathematical formula called an
algorithm to change their code each time the transmitter is used. This tech-
nology has been developed to increase the security of the unit. The control
unit knows what the next codes should be. This helps to keep the transmitter
“in synch” with the control unit even if you use the remote control out of range
of the vehicle. However, if the transmitter has been pressed many times out
of range of the vehicle, or the battery has been removed, it may get out of
synch with the control unit and fail to operate the system. To re-synch the
remote control simply press the arm/disarm Button of the remote control sev-
eral times within range of the vehicle. The alarm will automatically re-synch
and respond to the transmitters normally.
Programming Options
Programming options control what your system does during normal opera-
tion, and require little or no additional parts. However, some may require addi-
tional installation labor. The following is a list of the programmable options,
with the factory settings in Bold.
• Active arming (only with the transmitter) or passive arming (automatic
arming 30 seconds after the last door has been closed).
• Arming/disarming confirmation siren chirps on or off.
• Passive door locking (with passive arming) or active door locking (only
when arming with the transmitter) . This feature only works if passive arm-
ing has been selected for step one.
• The ignition-controlled door locking feature on or off. With this feature on,
the doors will lock 3 seconds after the key is turned on, and unlock when
the key is turned off.
