SDC 1251D 24VDC Less Switch, Failsecure

Protect critical access points with the Security Door Controls SDC 1251D 24VDC Less Switch, Failsecure — a robust door‑mount component designed for commercial access control and security systems. Built to operate at 24VDC, this failsecure unit keeps doors locked when power is removed, providing consistent protection for assets and restricted areas. It handles a 2.5A in‑rush current and draws just 0.4A holding current, delivering reliable lock engagement with energy‑efficient operation that lowers long‑term power costs. The compact door‑mount form factor simplifies retrofits and new installations, and the SDC 1251D integrates cleanly with magnetic lock parts, electric strikes and access control panels. Manufactured in the USA and listed under part number 1251D, it meets the durability demands of commercial buildings, retail sites, healthcare facilities and industrial environments. Ideal for projects that require tight integration with surveillance and monitoring systems, the SDC 1251D helps you maintain secure perimeters while keeping operation and maintenance simple. Add this failsecure switch to your access control setup to improve security and system reliability — contact your supplier or order now for fast deployment.

• Ensures secure, fail-safe asset protection with a failsecure design that keeps doors locked during power loss
• Reduces ongoing energy costs with a low 0.4A holding draw while supporting 2.5A in‑rush for reliable lock engagement
• Compact door‑mount form factor for straightforward retrofit or new‑build installation in access control systems
• Built for integration with magnetic lock parts and electric strikes, simplifying connection to panels, surveillance and monitoring systems
• US‑manufactured quality (Manufacturer Part Number 1251D) for dependable performance in commercial security applications