SDC 631RFAXUR4-8XKL 1A Regulated Power Supply for UR4-8 Universal Door Control Module

Keep your access control and door hardware running reliably with the Security Door Controls SDC 631RFAXUR4-8XKL 1A regulated power supply. Built specifically for the UR4-8 universal door control module, this power supply delivers a stable, regulated 1A output to ensure consistent operation of locks, readers and sensors used in security and surveillance systems. By providing clean power, the 631RFA minimizes nuisance resets and false alarms, improving monitoring accuracy and reducing field service visits. The unit’s compatibility with the UR4-8 controller streamlines installation and wiring for system integrators and facilities teams, making it an efficient choice for retrofit and new-access installations. Ideal for commercial buildings, healthcare, education and other critical infrastructure deployments, this Security Door Controls power supply helps maintain continuous operation of door controllers and peripheral devices. Add the SDC 631RFA to your access control toolkit to enhance reliability and simplify maintenance — perfect for professional security, surveillance and monitoring projects.

• Provides stable, regulated 1A power to UR4-8 universal door control modules, reducing lock and controller failures
• Ensures clean, consistent power for access control devices, improving uptime for security and monitoring systems
• Designed for seamless integration with Security Door Controls UR4-8 modules to simplify installation and wiring
• Protects connected readers, sensors and relays from power-related faults, lowering maintenance and service calls
• Compact, purpose-built power solution for professional access control and surveillance applications