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Alarm system

  • US 4,577,182 A
  • Filed: 04/10/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 04/10/1984
  • Status: Expired due to Term
First Claim
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1. An alarm system for a protected premises at a fixed location, which comprises:

  • a digital communicator;

    means for connecting an alarm signal line to said digital communicator;

    a cellular transceiver, said cellular transceiver having programmable means, an audio input and an audio output;

    said digital communicator having an audio output and an interrogation input;

    means coupling said digital communicator audio output to said cellular transceiver audio input;

    means coupling said cellular transceiver audio output to said digital communicator interrogation input;

    an antenna connected to said cellular transceiver, whereby an alarm signal received by said digital communicator will operate said cellular transceiver to transmit an over-the-air signal to a cellular site, where it can be forwarded to an alarm monitoring station with the alarm monitoring station being placed in two-way communication with the cellular transceiver via the cellular site.

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