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Apparatus and method for multiplexing multiple data and analog values in a peripheral device

  • US 5,173,683 A
  • Filed: 04/22/1991
  • Issued: 12/22/1992
  • Est. Priority Date: 04/22/1991
  • Status: Expired due to Term
First Claim
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1. An alarm apparatus for multiplexing alarm and type values in a peripheral fire detection device in communication with a control panel comprising:

  • a head component comprising means of a particular type for sensing on command the presence or absence of an alarm condition and generating values representative of both an alarm condition and type of sensor;

    a base component for securing the head component in position, said base component comprising means for communicating with the control panel and controlling the head component according to commands received from the control panel; and

    a communication interface for multiplexing alarm and type values between the head component and the base component comprising no more than three connectors electrically coupled to the head component and the base component.

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