Code Hopping - DEI 720T Owner's Manual

step. There are 16 possible settings. When the maximum or
minimum setting is achieved, the siren will emit a long chirp.
NOTE: If more than five seconds elapse without an adjustment, shock
sensor adjustment mode will be exited. Repeat steps 1 through 3 to
make additional adjustments. The siren will generate one long chirp fol-
lowed by two short chirps when the shock sensor adjustment mode is
exited.

Code Hopping

The receiver and transmitters each use a mathematical formula
called an algorithm to change their code each time the transmit-
ter is used. This technology 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 synchronized 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 sync with the control unit and fail to operate the
system. To resynchronize the remote control simply press
the remote control several times within range of the vehicle. The
alarm will automatically resynchronize and respond to the trans-
mitters normally.
1999 Directed Electronics, Inc.
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