Security Door Controls Blog

SDC’s LR100 Series ELR Kits Are the Top Choice for Access Control in the U.S.

Posted by Security Door Controls on February 20, 2026 at 3:58 PM

SDC introduced the first motorized retrofit ELR kit in 2012. Since then Quiet Duo LR100 solutions have been the leader in durability & installation ease.

Topics: SDC , Electric Latch Retraction , Access Control , Door Access Control Solutions , Division 8 , Buy American , Exit Devices , Electronic Access Control

Alternatives to Using Magnetic Locks for Access Control in Storefronts

Posted by Security Door Controls on December 6, 2024 at 10:00 AM

Explore the benefits of factory installed ELR in the SDC S5000 storefront exit device and how it can optimize your code compliant entrance upgrades.

Topics: Electric Latch Retraction , Access Control , Door Access Control Solutions , Division 8 , Electrified Exit Devices , Exit Devices

The Benefits of Motorized Electric Latch Retraction in Industrial Exit Devices

Posted by Security Door Controls on October 4, 2024 at 10:00 AM

Discover the advantages of motorized electric latch retraction in industrial exit devices, including cost-effectiveness and enhanced security. Explore the features of the SDC S4000 exit device and how it can optimize your facility's safety measures.

Topics: Electric Latch Retraction , Access Control , Door Access Control Solutions , Division 8 , Electrified Exit Devices , Exit Devices