Allen-Bradley 1756-CNBR Series D ControlLogix Redundant ControlNet Bridge Communication Module. Brand: Allen-Bradley / Rockwell Automation Model: 1756-CNBR Series: D Condition: New, open box Genuine OEM Allen-Bradley product Box may show minor shelf wear from storage. Factory seal remains intact. Please verify compatibility with your application before purchasing. Item will be carefully packaged and shipped promptly.