The Triconex 3564 is a high-reliability Analog Input (AI) module designed for use within the Triconex Triple Modular Redundant (TMR) safety instrumented system (SIS). This module provides 16 differential input channels, each capable of receiving a 0-5 VDC signal from field devices. It plays a crucial role in safety-critical applications by accurately converting analog sensor data into digital format for processing by the Tricon main processors. The 3564 is hot-swappable, allowing for online replacement without interrupting the process, thereby ensuring maximum system uptime and continuous protection for critical industrial operations.