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Component interfacing in hazard safety systems

  • US 9,851,699 B2
  • Filed: 07/17/2014
  • Issued: 12/26/2017
  • Est. Priority Date: 07/18/2013
  • Status: Active Grant
First Claim
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1. A dongle for interfacing a control panel system with a hazard detection device, the control panel system comprising a control panel and at least one wired detection string, wherein the control panel monitors a current level provided to each wired detection string to determine whether an alarm condition exists on the at least one wired detection string, and wherein the hazard detection device would cause a false alarm condition to exist for the wired detection string if it were directly electrically coupled to that wired detection string, the dongle comprising:

  • a first connector configured to be electrically coupled to a wired detection string of the control panel system;

    a second connector configured to be electrically coupled to the hazard detection device; and

    a first module configured to;

    receive a control signal from the hazard detection device via the second connector;

    pull a first amount of current from the control panel system via the first connector when the received control signal is a first value, the first amount of current having a current level that does not indicate an alarm condition exists on the wired detection string; and

    pull a second amount of current from the control panel system via the first connector when the received control signal is a second value, the second amount of current having a current level that does indicate an alarm condition exists on the wired detection string.

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