The D4NL-4EFA-B4 is a rugged and reliable door interlock switch designed for demanding industrial environments. Constructed with a durable plastic housing and featuring a screw mount installation, this switch offers secure and stable operation. With an IP67 ingress protection rating, it ensures reliable performance even in harsh conditions. The switch's bright orange LED illumination provides clear visual feedback, enhancing safety and visibility. Its 2NC/1NO + 1NC/1NO contact configuration allows for versatile connectivity, while the 10A/2.5A current rating and 120V/125V voltage rating ensure compatibility with a wide range of systems. The M20 conduit thread size makes installation easy and convenient. Perfect for use in machinery, equipment, and access control systems, the D4NL-4EFA-B4 is a crucial component for ensuring operational safety and efficiency.