SDC UR4-8 UR Series Universal Microprocessor-Based Door Controller, Relays

The Security Door Controls UR4-8 Universal Microprocessor-Based Door Controller delivers flexible, reliable access control and streamlined security management for multi-door installations. As a programmable door controller, the UR4-8 puts field-selectable logic at the door, offering 13 station/system modes and 4 selectable relay output modes so you can support lock types and workflows without extra hardware. Relays can be set as dry contacts or voltage (wet) outputs and can operate independently or in tandem—reducing the need for standalone relays and simplifying system wiring.

Designed to centralize wiring for locks, monitoring contacts and peripherals, the UR4-8 reduces installation time and makes troubleshooting faster for security integrators and facilities teams. On-board support for mantrap and bathroom system configurations, plus an emergency release input and multiple system control inputs, helps you meet complex access control, monitoring and life-safety requirements. At a compact 7" x 5" x 2", it fits neatly into panels or racks and integrates smoothly with existing surveillance and networked security systems. Add the UR4-8 to your next access control or security deployment to simplify wiring and improve system reliability.

• Flexible field-selectable relay modes let you standardize on one controller for nearly all multi-door applications
• Reduces installation time and troubleshooting with centralized wiring for locks, sensors and peripherals
• Configurable dry-contact or voltage (wet) outputs provide seamless integration with varied lock hardware and security systems
• Built-in logic for mantrap, bathroom systems and emergency release minimizes external relays and controllers
• Compact, durable design (7" W x 5" H x 2" D) that mounts easily in access control panels or equipment racks