Security Door Controls Blog

Learn why electromagnetic locks are highly reliable, long-lasting units compared to other electric locking devices and provide proven, failsafe security.

Reduce time-in-transit with our shipQUICK Inventory of 300+ SDC products that are available for shipment within two business days!

Come visit us at ISC West 2024, booth # 21109! Since 1972, SDC's products have been made in America while most of our larger competitors build overseas.

Discover the transformative potential of electric latch retraction technology in revolutionizing security systems and enhancing protection.

We take this day to remember the lives impacted on 9/11

Discover the transformative potential of electric latch retraction technology in revolutionizing security systems and enhancing protection.

SDC will be closed on September 2nd in honor and celebration of Labor Day

It is with great sadness, and also with great gratitude for having known and worked with her, that we announce Rhonda’s passing Thursday morning, August 15th, after a difficult illness.

Explore the importance of delayed egress devices in ensuring security and compliance in various settings.

Upgrade your security system with IP-based access control for doors. Discover the benefits and possibilities of integrating door openings into EAC systems.