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

Allen Bradley 1756-DHRIO Dh Rio Communication Interface Ser B

Allen Bradley 1756-DHRIO /E ControlLogix 2-CHNL DH+/RIO Comms Module 1756DHRIO

ALLEN BRADLEY COMMUNICATION INTERFACE 1756-DHRIO SERIES D

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

ALLEN BRADLEY CONTROLLOGIX 1756-DHRIO SER. E F/W 7.2 INTERFACE NSMP

AB 1756-DHRIO/D Allen-Bradley Controllogix DH Plus / RIO Comms Module NEW Sealed

Allen-Bradley 1756-DHRIO/C Controlnet Communication Interface *No Door