Security Door Controls Blog

Since 1972 SDC products have been designed, engineered and built in America while most of our larger competitors manufacture overseas. With a robust toolbox of over 35,000 access & egress control components at your fingertips, you can assemble turnkey solutions to address both market-specific and application-specific requirements for almost any door opening imagined. 

Electric Latch Retraction (ELR)

With a visually appealing and functional design, SDC Door Prop Alarms are compatible with all access control systems, but can also function as a stand-alone solution. Now you can support positive access control and security behavior at any facility.

"Bringing Electronics to the Door"

 How you upgrade the door is key to minimizing liability and maximizing profit potential.

Volumes have been written and various training courses designed to educate security pros about the proper ways to convert door openings to electronic access control (EAC). This overview is a short summary of recommendations to consider when upgrading any door from mechanical to electronic.

Visit the article to read more!

SDC's UniFLEX™ electric strike products feature an interchangeable faceplate design.

Why should you care? The interchangeable faceplate design allows for these strikes to meet a variety of applications. Simply change the faceplate to meet your specific needs!

SDC's 55 series and 45 series electric strikes are available in a variety of configurations to accommodate several types of mechanical locksets and door and frame styles - as well as failsafe and failsecure applications.

SDC’s 55 series 3/4” latchbolt electric strikes are heavy duty. They are designed for installation in hollow metal frames for access control of cylindrical locksets, mortise locksets with or without deadbolts and mortise exit devices. 55 series strikes accept 3/4” throw latchbolts and up to 1” throw deadbolts. The choice of six application faceplates eliminates the need for centerline relocation, making them ideal for new or retrofit, high security access control applications.

SDC’s 45 series 5/8” latchbolt electric strikes are centerline latch entry strikes designed for use with cylindrical locksets and mortise locksets without deadbolt for both metal and wood frames. 45 series strikes accept 5/8” throw latchbolts or up to ¾” throw latchbolts with 1/8” door gap. Centerline latch entry strikes require the latch to enter at the strike “centerline” located exactly between the top and bottom of the strike faceplate.

As an additional benefit, we have created all-in-one part numbers that come with the electric strike and three faceplates for the most common applications.

Check out our new Electric Strikes page for more information!

SDC's AUTO series operators can power all of SDC's motorized ELR products.

Why should you care?
AUTO series operators eliminates the need for a separate power supply to power latch retraction products with it's own built in 1 Amp+ power supply! 

Since 2012, when SDC launched the QuietDuo™ LR100 series – the first retrofit motorized ELR kits to convert mechanical exit devices – we’ve been “quietly” leading in electric latch retraction upgrades for access control.

SDC now provides these same high performing motorized ELR features in the new American Made S5000 series storefront and S4000 series industrial electrified exit devices.

The new electrified devices, in addition to the existing LR100 series retrofit ELR kits and 7600 series motorized ELR mortise locks are conveniently compatible with low energy operators including SDC's AUTO series.

Highlights of our AUTO series operators include:

Code Compliant, Flexible Access & Lockdown Control

No Classroom Security Solution Is Complete Unless It Also Addresses Life Safety. For example, fire is statistically more than three times likely to happen than an active shooter situation in a school*. School administrators considering security, risk mitigation and liability should only consider traditional, tested, locking products that meet the code requirements for providing life safety in addition to security.

There are many different brands of cost effective commercial exit devices on the market. The vast majority of these devices are strictly mechanical. Today’s market demands an Economical Commercial Exit Device with Electric Latch Retraction. Not only does SDC’s S4000 Series Electrified Commercial Exit Device satisfy both market needs for a cost-effective exit device with ELR, but the S4000 also comes standard with Request-to-Exit Monitoring, enabling access control compatibility.