The Klöckner Moeller easySmart relays were designed as a simple but effective solution for controlling small to medium-sized automation projects. These smart relays were often utilized in applications that did not require the full complexity or capabilities of a standard Programmable Logic Controller (PLC).

Typically, easySmart relays were used in smaller-scale industrial applications such as lighting control, pump and fan operation, HVAC systems, and simple assembly lines. They were also employed in commercial settings for building automation and other basic control tasks.

The easySmart relays were known for their ease of use. Many models came with intuitive programming software, often with drag-and-drop functionality for programming tasks. The relays could handle a variety of input and output types, including digital and analog signals. They also often featured built-in display screens for easy monitoring and control.

Since Klöckner Moeller's acquisition by Eaton, the easySmart relay line has likely been integrated into Eaton's broader range of automation and control solutions. Eaton has continued to develop and refine similar products under their brand, expanding upon the original easySmart relays' capabilities with features like IoT connectivity, enhanced data logging, and improved cybersecurity measures.

Overall, the easySmart relays represented a practical, user-friendly option for small to medium-sized automation projects, and they served as a stepping stone for organizations looking to automate without investing in more complex and expensive PLC systems.