The B&R X20BT9400 is a high-precision temperature input module designed for the modular X20 I/O system. It features four inputs specifically for connecting PT100 and PT1000 resistance temperature sensors. This module supports 2, 3, or 4-wire connection methods, offering flexibility and ensuring high accuracy by compensating for lead resistance. With a 16-bit resolution, the X20BT9400 provides reliable and precise temperature measurements essential for a wide range of industrial automation and process control applications. Its configurable filter settings and diagnostics capabilities make it a versatile and robust solution for temperature monitoring.