The Allen-Bradley 1771-AL PLC 2 Local I/O Adapter Module enhances your PLC system with its ability to seamlessly interface with I/O modules using the PLC 2 family processors, supporting a broad range of configurations with 4, 8, 12, and 16-slot I/O chassis. It efficiently manages input and output data flow with the processor, offering two-slot I/O addressing that simplifies management by addressing pairs of adjacent slots as a single unit. Compatible with PLC-2/20 and PLC-2/30 processors, this module is designed for industrial environments, operates within a temperature range of 0 ° to 60 °C, and possesses a robust communication capability with a parallel backplane current requirement of 700mA at 5V DC.