The Allen-Bradley 1734-ARM POINT I/O Address Reserve Module Passive Slot Holder is a unit designed specifically for industrial automation and motion control systems. This module, with model number Allen-Bradley 1734-ARM, includes a passive slot holder and has a quantity of 2 units. It is a reliable part from the trusted brand Allen-Bradley, ideal for use in PLC input/output systems to reserve memory addresses for future use in the automation process.