Relay signals are an essential part of many electrical and automation systems. These signals play a crucial role in controlling circuits, enabling the safe operation of various devices, and automating industrial processes. In this article, we will explore the fundamentals of relay signals, how they work, and their widespread applications in modern technology.

What Are Relay Signals? Relay signals are electrical signals used to control a relay—a type of electrical switch that allows one circuit to control another. The relay is activated by a low-power input signal (such as a low voltage or current) that triggers an electromagnetic mechanism. This action causes the relay to change its internal contacts, enabling or disabling the connected circuit. Relays are often used in situations where the control circuit must be isolated from the high-power circuit. In essence, the relay acts as an intermediary between the control signal and the high-power components, offering safety, efficiency, and flexibility in design.