The C3COM-3 is a 4-Series™ control card that provides three COM ports. Each COM port supports bidirectional RS-232, RS-422, or RS-485. The card is designed to install in a control card expansion slot of a 3-Series Control System® model PRO4 or AV4[1], or 4-Series Card Interface model CEN-CI3-1 or CEN-CI3-3.
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