ALLEN BRADLEY 1756-DHRIO PLC MODULE - Used

Allen Bradley 1756-DHRIO/A ControlLogix Interface Module 2 for $40

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Allen-Bradley 1756-DHRIO/B Communication Interface/Scanner Module 96308274

ALLEN BRADLEY 1756-DHRIO/B SERIES B COMM INTERFACE MODULE

Allen Bradley 1756-DHRIO Dh Rio Communication Interface Ser B