Avital AVISTART 4400 - Manual (Page 47)

44 © 2 0 0 4 d i r e c t e d e l e c t r o n i c s , i n c .
c co od de e h ho op pp piin ng g
The receiver and remotes use a mathematical formula called an
algorithm to change their code each time the remote 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 remote “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 several times within range of
the vehicle. The alarm will automatically re-sync and respond to
the remote normally.
h hiig gh h ffrre eq qu ue en nc cyy
Your system transmits and receives at 434 MHz. This provides a
cleaner spectrum with less interference and a more stable signal.
Enjoy a phenomenal increase in range, even in areas with high radio
interference.