Viper 700 ESP User Manual download pdf (Page 17)

2000 Directed Electronics, Inc.

Code Hopping

The receiver and transmitters each use mathematical formulas

called algorithms to change their codes 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 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 re-sync the remote control simply press of the transmitter

several times within range of the vehicle. The alarm will automat-

ically re-sync and respond to the transmitters normally.

High Frequency

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.

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Viper 700 ESP User Manual Page 17