The REL-IR2/L-120AC/2X21 is a plug-in industrial relay by PHOENIX CONTACT with power contacts. It features two PDTs (Pole Double Throw) for versatile switching capabilities. The relay also includes a convenient test key and a status LED for easy monitoring of the relay's operation. Additionally, it comes with a mechanical switch position indicator, allowing users to visually determine the relay's current position. The input voltage for this relay is 120 V AC, making it suitable for a variety of industrial applications.