SDC SP403U S4000 Saturn Key Retracts Latchbolt

Keep rim-exit doors operating smoothly and securely with the Security Door Controls SP403U Saturn Key Retracts Latchbolt. Designed as a key-actuated latch retraction solution for SDC S4000 Series exit devices, this Key Retracts Latch Bolt provides dependable latch retraction when controlled access or emergency override is required. The SP403U (Manufacturer Part Number SP403U) is engineered to support rim exit devices and integrates cleanly with access control, monitoring and surveillance systems to preserve site security while simplifying daily operation.

Built for installers and facility managers, the Saturn escutcheon trim delivers a compact profile and robust performance—reducing mechanical wear and minimizing service visits. Compatible with Security Door Controls S4000 Series hardware and made in TW, the unit offers a straightforward retrofit path for commercial, institutional, and high-traffic environments where reliable egress and controlled entry are essential. Specify the SP403U to streamline installation, enhance access control workflows, and maintain continuous security monitoring. Contact your distributor or add the SP403U to your next project for a professional-grade latch retraction solution.

• Ensures reliable latchbolt retraction for rim exit devices, improving controlled egress and secure access
• Direct OEM compatibility with Security Door Controls S4000 Series for fast, trouble-free installation
• Reduces mechanical wear and maintenance with precision key-actuated retraction for high-traffic doors
• Compact Saturn escutcheon design fits standard trims while supporting monitoring and access control integration
• Helps maintain building security and compliance by enabling controlled override without compromising surveillance systems