The Phoenix Contact PLC-RSC-24DC/21-21AU/MS is a reliable PLC interface designed for industrial control applications. This device features a relay base combined with a plug-in multilayer gold contact relay, ensuring precise switching performance. It includes manual operation capability, an integrated status LED for clear operation feedback, and a built-in freewheeling diode to protect against voltage spikes. The unit has screw connections and offers two changeover contacts, making it versatile for various control tasks. Operating at an input voltage of 24 V DC, this component is available through BSP Automation, providing a dependable solution for your automation needs.