I/O relay modules are essential electronic control devices designed to manage control ladders and controlled systems. Commonly used in automatic control circuits, these modules enable small currents to control larger currents, acting as automatic switches to enhance system efficiency and reliability.

These relay modules play a crucial role in automatic scheduling, circuit conversion, and safety protection, making them indispensable in industrial automation and advanced control systems. Their ability to provide seamless integration with input systems ensures optimal performance across diverse applications.