A relay with an optocoupler combines the functions of a relay and an optical isolator, allowing for the control of high voltage or high current circuits while providing electrical isolation from the control circuit. These components are called optocouplers or optoisolators or simply optos, and they perform the crucial function of passing signals between isolated sections of circuitry. In this guide, you'll learn how they work and how you can use one in your own projects. They're perfectly suited for industrial automation, process and power engineering, rail systems, shipbuilding, and control cabinet manufacturing. Our relays ensure the reliable signal switching of AC and DC loads.