Sdc UR2-4 4-station Universal Relay Board

Product Description

The SDC - SECURITY DOOR CONTROLS UR2-4 is a 4-station universal relay board designed for use in access control and security door panel systems. It provides multiple relay outputs that allow installers to expand or distribute control signals across door strike, magnetic lock, or auxiliary device circuits. The board is sold as an individual unit and is classified as a panel accessory, making it a core component in structured access control installations. Security and low-voltage integration technicians are the primary installers of this relay board.

The UR2-4 is suited for commercial and light-industrial access control panel installations where multiple door stations or auxiliary control points must be managed from a single panel. It is typically installed inside an access control enclosure alongside the main control board, providing additional relay capacity for facilities with four or more controlled door stations. Installers use this board to extend relay output capability without adding a separate panel.

Key Features

• 4-station relay configuration supports multiple door or device control points from a single board
• Universal relay design allows compatibility across a range of access control panel configurations
• Sold as a single unit for straightforward procurement and replacement
• Classified as a panel accessory for integration within existing control enclosures

Compatibility

Designed as an OEM-style panel accessory relay board for use in access control systems requiring multi-station relay expansion. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed low-voltage technician familiar with access control panel wiring and applicable local codes. De-energize the entire panel and disconnect all power sources before handling or installing the relay board. Secure the board within the enclosure per the manufacturer installation manual before reconnecting power and testing relay outputs. Refer to the manufacturer product manual for wiring diagrams and terminal assignments specific to this board.