Security Door Controls Blog

Discover how electrified options can revolutionize access control systems, enhancing security, architectural aesthetics, and code compliance.

Motorized electric latch retraction (ELR) systems are becoming increasingly popular in access control applications. These systems provide a convenient and secure solution for controlling entry and exit points in various commercial and institutional settings. With a motorized ELR, the latch can be retracted remotely, allowing for easy passage through a door without the need for physical contact. This not only enhances convenience for users but also minimizes the risk of unauthorized access or tailgating. Motorized ELRs are often integrated with other access control technologies such as card readers or biometric systems, providing a comprehensive and efficient security solution. Additionally, these systems can be easily installed and configured, making them suitable for both new installations and retrofit projects. With their reliable performance, smooth operation, and advanced features, motorized ELRs are revolutionizing access control and setting new standards for convenience and security.

1 – 6 Amp Access Control Power Supplies

In 1994 SDC introduced the 602 power controller – the first hybrid supply to combine the efficiency (low heat generation) of switching power supplies and the rugged inductive load handling capability of linear power supplies to meet the unique needs of access control locking devices. 

Unlike camera system power requirements, access control systems draw more current for locking hardware and during access control-related events. As the industry transitions from solenoid-based electric locking devices to motorized devices, demand for specific power supply requirements has also increased. 

SDC’s 12/24VDC class 2 hybrid power supplies have been designed specifically to meet these needs and reduce power system issues with extra filtering, heavy-duty circuitry for inductive loads and multi-door applications, and an isolated battery charging circuit to protect locking devices and components from over voltage while the batteries are charging. With the addition of SDC programmable controllers or relay modules, the user-friendly modular designs ensure versatility, interface capability and easy installation of virtually any electric locking devices, access controls and related fire life safety equipment.

Back to Basics: Electric Strikes

In 1982, SDC’s first electric strike design initiated the adoption of strikes by the door hardware industry. Then, we engineered the UniFLEX™ 45 and 55 series – the first electric strikes with interchangeable faceplates and field reversibility for failsafe or failsecure operation. The interchangeable design of these strikes allows SDC to also provide multiapplication strike kits that include one electric strike and three faceplates to meet common applications, making them easy to stock and maintain in inventory.

Today, our strikes integrate with a broad range of mechanical locksets, devices, door and frame styles and budgets. Since 1972 SDC products have been designed, engineered and built in America to provide quality products that are readily available.

See these selected 4th quarter highlights from our robust toolbox of over 35,000 access + egress control components...

... all designed, engineered and built in America while most of our larger competitors manufacture overseas.

Back to Basics: Egress Devices

In 1992, SDC’s SureExit® was and still is the only tri-failsafe request-to-exit bar and the only egress device utilizing pressure sense technology - with no moving parts. When slight pressure is applied two redundant solid state pressure sensors release locks immediately. A third redundant micro switch is automatically activated to release the door if both sensors or the electronics fail. This ensures door operation will continue without prior knowledge or use. Unlike touch sensors, activation may be accomplished while wearing heavy gloves.

The MSB550 series of mechanical switch REX bars are an economical alternative to sensor activated bars. Both of these narrow, low profile egress device lines are built with heavy duty aluminum extrusions and metal end caps for high traffic while maintaining superior aesthetics for high profile openings. Since 1972 SDC products have been designed, engineered and built in America to provide quality products that are readily available.

See these selected 3rd quarter highlights from our robust toolbox of over 35,000 access + egress control components...

... all designed, engineered and built in America while most of our larger competitors manufacture overseas.

Mini Integrated Delayed Egress Locks

SDC’s 1581S series mini delayed egress locks are designed to meet the needs of long term care and commercial facilities that require a smaller, less obtrusive, and less expensive delayed egress lock that is better suited for minimum security needs.

The 1581S series delays egress through perimeter exit doors for 15 or 30 seconds, alerts security and personnel to unauthorized egress, and is compatible with access controls and patient wandering and infant tracking systems.

See these selected 2nd quarter highlights from our robust toolbox of over 35,000 access + egress control components...

... all designed, engineered and built in America while most of our larger competitors manufacture overseas.

Low Energy Swing Door Operators

SDC’s EntryControl™ AUTO series low energy swing door operator with built-in 1 amp+ power supply provides the ability to power motorized electric latch retraction without a separate power supply.

Designed for low-power retrofits of any building entrance with an exit device, SDC operators feature fast, one-man installation time and help meet US and Canadian disability compliance for door installation in retail storefronts, office buildings, campuses and healthcare facilities. With single button setup, self-tuning, self-learning and onboard lock sequencing capabilities, SDC operators integrate easily with popular access and egress control hardware.