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Personal alarm system

  • US 4,524,243 A
  • Filed: 07/07/1983
  • Issued: 06/18/1985
  • Est. Priority Date: 07/07/1983
  • Status: Expired due to Term
First Claim
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1. A subscriber station for transmission of information over a a communications link to a central monitoring station and indicative of subscriber inactivity comprising:

  • means operative to provide an alert signal at predetermined time intervals;

    switch means;

    means operative to transmit a first message over said communications link to said central monitoring station in response to said alert signal;

    means operative to transmit a second message over said communications link to said central monitoring station within a selected period following the occurence of said alert signal upon activation of said switch means.

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