SDC UR Series Universal Microp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$129.00
$83.09
SDC SDC UR Series - Universal Microprocessor-Based Controllers SDC-UR

SDC UR Series Universal Microprocessor-Based Door Controllers with Multi-Relay Configuration

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Model: UR-1

In Stock (leaves warehouse same day if ordered before 3pm ET)

$129.00
$83.09
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SDC UR Series Universal Microprocessor-Based Door Controllers with Multi-Relay Configuration

Award-Winning Microprocessor-Based Door Control Solution

The SDC UR Series Universal Microprocessor-Based Door Controllers deliver flexible, field-programmable control for single or multi-door applications with 12/24VDC operation. Available in three models (UR-1 with two relays, UR2-4 with four relays, and UR4-8 with eight relays), these controllers feature selectable relay operating modes and programmable system logic for lock control, monitoring, and communication. Trusted in thousands of installations since 1998, the UR series provides centralized wiring capabilities with optically isolated dry inputs and auto-sensing dual voltage operation.

Professional Features & Benefits

  • Multi-Model Configuration: Available as UR-1 (two relays), UR2-4 (four relays), and UR4-8 (eight relays) to accommodate various application requirements from single door to complex multi-door systems.
  • Flexible Power Operation: Auto-sensing dual voltage 12/24VDC operation provides compatibility with various power supply configurations and existing systems.
  • Advanced System Logic: Microprocessor-based system logic with programmable system and station modes supports complex applications including airlock, interlock, mantrap, and shared bathroom configurations.
  • Versatile Relay Configuration: Individual dip switch selectable relay operating modes with choice of dry contact or voltage (wet) output, configurable to work independently or in tandem with adjacent relays.
  • Centralized Wiring Design: Consolidates wiring for all locks, access control, monitoring contacts, and peripheral equipment to reduce installation complexity and troubleshooting time.
  • Proven Reliability: Award-winning design trusted in thousands of installations since 1998 for consistent performance in demanding commercial applications.
  • Visual Status Monitoring: Built-in LED status indicators provide real-time system feedback for operational verification and troubleshooting.
  • Optically Isolated Inputs: Dry inputs with optical isolation protect against electrical interference and ensure reliable signal processing.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Model: UR-1, UR2-4, UR4-8
  • Product Subgroup: Controllers, Power Supplies and Transformers
  • Product Type: Controllers
  • Product Voltage: 12/24VDC
  • Series: UR Series
  • Subcategory: Door Controllers

Professional Applications

  • Commercial Building Access Control Systems
  • Multi-Door Security Installations
  • Healthcare Facility Access Management
  • Educational Institution Security Systems
  • Industrial Facility Entry Control
  • Airlock and Mantrap Applications
  • Shared Facility Access Control

Why Choose SDC Quality?

SDC UR Series controllers deliver professional-grade reliability with microprocessor-based system logic and award-winning design trusted in thousands of installations since 1998. The flexible, field-programmable architecture with auto-sensing dual voltage operation and centralized wiring capabilities reduces installation complexity while providing the versatility needed for demanding commercial access control applications.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Door Controllers
Series:
UR Series
Product Group:
Electronic Access Controls
Product Subgroup:
Controllers, Power Supplies and Transformers
Product Type:
Door Controllers
Commercial/Residential:
Commercial
Electronic:
Yes
Product Model:
UR-1, UR2-4, UR4-8
Product Voltage:
12/24VDC
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC UR-1 – Frequently Asked Questions

1) How many doors can an SDC UR Series controller handle, and which model do I need?
The UR Series comes in three relay counts, and that is the choice that decides the model. UR-1 has two relays, UR2-4 has four, and UR4-8 has eight. Relays can be configured to work independently or in tandem with an adjacent relay, so a single opening that needs both lock power and a monitoring or auxiliary output eats two relays rather than one. Size the model on relays needed, not door count.
2) Will the SDC UR controller run on my existing 12VDC power supply, or do I need 24VDC?
Either one. The UR Series is auto-sensing dual voltage and operates on 12/24VDC, so it drops onto whatever supply is already feeding the openings without a jumper change or a second power supply. That matters on a retrofit where some hardware in the building is 12V and newer strikes or mag locks are 24V.
3) Can an SDC UR controller do a mantrap or interlock so two doors can't be open at once?
Yes, that is one of the programmed system modes. The UR Series microprocessor logic supports airlock, interlock, mantrap, and shared bathroom configurations through programmable system and station modes, so the sequencing lives in the controller instead of in a custom relay rack you build on site. For a two-door interlock you are working with at least two relays plus the door position inputs, so match the model to the number of openings in the sequence.
4) Does the SDC UR controller give a dry contact output, or does it switch power to the lock?
Both, and it is selectable per relay. Each relay's operating mode is set by individual dip switch, with a choice of dry contact or voltage (wet) output. So one relay can pass voltage straight to an electric strike or mag lock while another sends a dry contact to an access control panel or alarm point, on the same board.
5) Is the SDC UR Series programmed with software, or is it set up on the board?
It is field-programmable at the board. Relay operating modes are set with individual dip switches and the system and station modes are programmed on the controller itself, with LED status indicators for real-time feedback while you verify and troubleshoot. No head-end software or laptop is part of setting the logic.
6) Will the UR controller's inputs work with the outputs from my card reader panel and door contacts?
The UR Series takes optically isolated dry inputs, so it accepts a dry contact closure from an access control panel relay, a request-to-exit device, or a door position switch. The optical isolation keeps noise on long runs from false-triggering the logic. If your panel only offers a voltage output rather than a dry contact, you need a contact closure between it and the UR input.
7) Can I use one UR controller as a central point instead of running lock wiring back to each door separately?
That is what the UR Series is built around. It consolidates wiring for all locks, access control, monitoring contacts, and peripheral equipment at one board, so the openings home-run to the controller and troubleshooting happens in one enclosure instead of at six doors. On a multi-door corridor or a stairwell bank, that is the reason to pick the four or eight relay model over separate single-door boards.
8) I need to add two more doors later. Should I buy the UR2-4 now or the UR4-8?
Buy for the relay count you will end at. The three models are fixed at two, four, and eight relays (UR-1, UR2-4, UR4-8) and the relay count is what the model number sets, so expanding later means adding a second controller rather than adding relays to the one you have. Remember that a door needing both a lock output and a separate monitoring or auxiliary output uses two relays, since relays can be tied to an adjacent relay.
9) Is the SDC UR controller suitable for a residential or light-duty install?
No. The UR Series is a commercial-rated door controller, built for commercial building access control, multi-door security, healthcare, education, and industrial entry control. For a single residential opening it is far more controller than the job needs, and the multi-relay logic gives you nothing back.
How fast can I get the SDC UR-1 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SDC UR-1 come with a warranty?
Absolutely. The SDC UR-1 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SDC UR-1?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC UR-1 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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