Patent ID: 7501937

Claim:
A pre-warn vehicle security device for a vehicle comprising a data communications bus extending throughout the vehicle and carrying data and address information thereover, an audible alert indicator, and an alarm controller interfacing with the data communications bus extending throughout the vehicle and carrying data and address information thereover and causing the audible alert indicator to generate an audible alarm indication responsive to a sensed high security threat level condition, the pre-warn vehicle security device comprising: a housing; a multi-stage sensor carried by said housing for sensing the high security threat level condition and communicating the sensed high security threat level condition to the alarm controller via the data communications bus extending throughout the vehicle and carrying data and address information thereover, and for sensing a low security threat level condition lower than the sensed high security threat level condition; and an audible pre-warn indicator carried by said housing and connected independently of the data communications bus to said multi-stage sensor for generating an audible pre-warn indication responsive to the sensed low security threat level condition, the audible pre-warn indication having a lesser volume and a shorter duration than the audible alarm indication.