Introduction

Allen-Bradley 1771-IR/C is a high-precision RTD (Resistance Temperature Detector) input module for the 1771 I/O system. It provides 16 RTD input channels with 3-wire or 4-wire connection, supporting various RTD types (Pt100, Ni120, Cu10). Featuring excellent noise immunity and PLC-5 compatibility, it delivers reliable temperature monitoring for industrial processes, HVAC, and power generation applications.

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