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    Emergency Voice/Alarm Communications System

    ST/PL4 Extension Module

    Discontinued

    Extension module for 4 inputs, 16 open collector outputs programmable for Alarm 2 or Alarm 3 for ST/PL4 control unit.

    Overview
    This product has been discontinued.
    Honeywell will provide product support until

    Extension module for 4 inputs, 16 open collector outputs programmable for Alarm 2 or Alarm 3 for ST/PL4 control unit.

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