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Vehicle security systems

  • US 7,786,848 B2
  • Filed: 05/22/2006
  • Issued: 08/31/2010
  • Est. Priority Date: 05/20/2005
  • Status: Expired due to Fees
First Claim
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1. A complementary security system for installation, at least in part, in a vehicle, said complementary security system comprising:

  • a control module for receiving a trigger signal indicative of an alarm condition detected by an security system, the trigger signal having a given trigger sequence for the vehicle, the trigger sequence having a predetermined minimum duration to be indicative of the alarm condition, said security system being already installed in said vehicle and having a remote Radio Frequency (RF) communication system having a first communication range for communicating a first alarm signal to a user via a first remote control device;

    a communication module connected to the control module and adapted for transmitting by Radio Frequency (RF) a second alarm signal upon receipt of said trigger signal by said control module, said second alarm signal having a second communication range greater than the first communication range and having a frequency level corresponding to that used for remote control devices; and

    a second remote control device for alerting the user upon receipt of said second signal, said second remote control device being located beyond the given communication range of the remote communication system of the security system.

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