Sdc Security Door Controls UR-1 Universal Relay Board

Product Description

The SDC Security Door Controls UR-1 is a universal relay board designed for use in electronic door access control and locking systems. It provides a flexible interface between access control panels, fire alarm systems, and electromagnetic or electromechanical locking hardware. The UR-1 serves as a signal-switching component that converts low-voltage control signals into relay-switched outputs, allowing a single control panel to operate multiple door devices or trigger auxiliary functions. Licensed security and low-voltage technicians are the primary installers for this type of device.

The UR-1 is suited for commercial and light-industrial door control applications where a relay-based interface is needed to coordinate door holders, magnetic locks, electric strikes, or alarm outputs. It is commonly installed in access control retrofits, new construction security buildouts, and fire-alarm door-release integrations. The board mounts inside a control enclosure or alongside access hardware at the door head or frame.

Key Features

• Universal relay board design allows flexible integration with a wide range of door control hardware
• Provides relay-switched output for low-voltage door access and locking devices
• Supports integration with fire alarm and access control panels
• Compact single-unit form factor suitable for enclosure mounting
• Sold individually as a direct replacement or system expansion component

Compatibility

Designed as an OEM-style relay interface board for use in commercial electronic door access control and locking systems.

Installation Notes

Installation of relay boards in access control systems should be performed by a licensed low-voltage or security systems technician in accordance with applicable local codes and NEC Article 725. Disconnect and de-energize all power to the access control panel and connected locking hardware before servicing or replacing the relay board. Verify relay output ratings match the load requirements of connected door hardware before energizing the system.