Viper 552 Series Owner's Manual page 23

dows automatically when the system is armed, or roll two win-
dows down by using the transmitter. The 530T will roll two win-
dows both up and down. The 530T also provides one touch switch
operation.
Progressive Door Unlocking: For added security, your system can
be configured to unlock the driver's door only, leaving the pas-
senger doors locked. Pressing the unlock button an additional time
will unlock the passenger doors. This option requires additional
parts and labor.
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