The Zelio Logic SR2 compact smart relay is a programmable controller that operates on a 24V DC supply voltage. It features 12 I/O points with screw-clamp terminals, an integrated clock, and an LCD display for easy monitoring. Its compact form factor is designed for installation on DIN rails, making it ideal for space-efficient control systems. The relay also offers user-friendly programming, built-in malfunction diagnostics, and simple navigation through display and buttons. With its intuitive ladder programming, it is well-suited for non-specialists looking for an accessible automation solution.