Relays are fundamental components in electrical and electronic systems, serving as switches that allow one circuit to control another, typically by using an electromagnet to open or close contacts. Their versatility has made them indispensable in various industries, from automotive and telecommunications to automation and home appliances. However, ensuring relay compatibility is critical for the efficient and safe operation of a system. In this article, we will explore the key factors that influence relay compatibility and offer best practices for selecting the right relay for your applications.