Relay signals play a pivotal role in the control systems of various industries, ensuring that low voltage circuits can manage the operation of high voltage or heavy-duty equipment. A relay is essentially an electrical switch that opens and closes under the control of an external signal. It is a fundamental component in electrical systems, industrial automation, communication, and safety applications. In this article, we will explore what relay signals are, how they work, their applications, and why they are important in modern control systems.
