SDC LR100CRK QuietDuo Corbin Russwin Field Install Retrofit Electric Latch Retraction Kit, 5000/4000, 36-48" Opening

Upgrade mechanical exit devices to modern access control quickly and cost-effectively with the Security Door Controls LR100CRK Field Install Retrofit Electric Latch Retraction Kit. This retrofit kit converts Corbin Russwin ED Series (5000/4000) exit devices into motorized latch retraction and dogging units, delivering reliable, momentary or sustained push-and-pull operation for high-traffic doors. Powered by DC with low current draw, the LR100CRK integrates cleanly with access control systems, building automation, and low-energy operators while preserving code-compliant, uninhibited egress for panic and fire-rated doors. Ideal for commercial, institutional, and healthcare facilities, the kit supports 36–48" openings and ensures continuous operation under heavy use. By retrofitting existing hardware rather than replacing it, facilities reduce downtime and implementation costs while improving perimeter security, monitoring, and occupant flow. Enhance your site's emergency egress readiness and access control capabilities with a dependable, field-installable solution. Order the LR100CRK for retrofit projects or contact our team to specify this Security Door Controls latch retraction kit for your next access control deployment.

• Retrofit existing Corbin Russwin 5000/4000 exit devices to electric access control without replacing the device
• Enables motorized latch retraction and dogging for hands-free entry and sustained traffic flow
• Maintains code-compliant, uninhibited egress for panic and fire-rated applications
• Low DC power draw and compatibility with low-energy operators and building automation systems reduces installation complexity
• Designed for 36–48" openings and high-traffic environments to improve security and operational uptime