Allen Bradley 1756-RM/A
Allen-Bradley 1756-RM ControlLogix Redundancy Module, Supports two 1756-L61, -L62, -L63 Controllers or one 1756-L64 Controller and up to seven Communication Modules, Series A
Allen-Bradley 1756-RM ControlLogix Redundancy Module, Supports two 1756-L61, -L62, -L63 Controllers or one 1756-L64 Controller and up to seven Communication Modules, Series A