The PHOENIX CONTACT REL-MR- 24DC/21-21/MS is a highly reliable and versatile plug-in miniature relay. It features power contacts and has two PDTs (double throw contacts) for effective switching applications. The relay also includes a convenient test button and a mechanical switch position indicator, allowing you to easily monitor the status of the relay.Additionally, the REL-MR- 24DC/21-21/MS is equipped with a status LED, which provides a visual indication of the relay's operational state. The relay also features a freewheeling diode, ensuring efficient and safe operation by suppressing voltage spikes.With its polarity A1+ - A2 and input voltage of 24 V DC, this relay is designed to meet your specific needs and provide reliable performance. Whether used in industrial control systems, automation applications, or any other electrical circuit, the PHOENIX CONTACT REL-MR- 24DC/21-21/MS is the ideal choice for efficient and secure switching.