The Allen-Bradley 1715-A2A is a Bulletin 1715 Redundant I/O 2-Slot Adapter Base Unit from Rockwell Automation, designed to provide reliable module mounting and connectivity within redundant control systems. This adapter base features two (2) module slots and supports up to twenty-four (24) connected modules in a redundant I/O configuration. The 1715-A2A has a maximum power dissipation of 8 Watts and uses a shielded RJ45 connector with a wire size of up to 2.5 mm² for secure communication and grounding. It measures 224 x 84 x 30 mm and weighs approximately 283 grams. Engineered for high-availability industrial applications, the 1715-A2A ensures stable operation, robust signal integrity, and efficient power distribution across the 1715 Redundant I/O system.