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Electronic security system

  • US 5,689,235 A
  • Filed: 04/02/1996
  • Issued: 11/18/1997
  • Est. Priority Date: 04/02/1996
  • Status: Expired due to Fees
First Claim
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1. A security system which comprises:

  • detecting means for detecting entry of a trespasser into a predetermined outdoor area or an indoor area and for generating a detection signal indicative of the entry of the trespasser;

    mode setting means operable by an input operation to select one of an alert mode, in which any possible entry into the predetermined outdoor area or the indoor area is monitored, and a non-alert mode in which the possible entry into the predetermined outdoor area or the indoor area is not monitored;

    control means for preferentially transmitting a warning through a telephone line upon receipt of the detection signal generated during the alert mode and for transmitting no warning during the non-alert mode;

    warning means for acknowledging dispatch of the warning; and

    priority selector means operable when the warning is preferentially transmitted to the telephone line for switching from the preferential transmission of the warning over to a normal telephone communication by means of an input operation performed by an operator informed of the warning.

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