What is a relay module? A detailed explanation of its meaning, function, and uses.

A module is a small that allows low-power signals to control high-power equipment. It works as a bridge between a control system—such as a PLC, Arduino, or microcontroller—and the high-voltage devices it needs to operate. Understanding relay module meaning helps you design safer, more efficient automation systems. What Does a Relay Module Do? (Meaning) A relay module functions as a remote-controlled electrical switch. Using a tiny input signal, it can turn large electrical loads on o