Image coming soon
Product images are provided for reference and may not represent the exact model, configuration, or included components.

Overview

SKU: SP403U
Condition: New
Availability: Usually ships in 24 hours
Warranty Limited Lifetime Warranty
Write a Review

SDC/Security Door Controls SP403U S4000 Saturn Key Access

SDC/Security Door Controls SP403U S4000 Saturn Key Retracts Access ControllerOverviewThe SDC SP403U is a networked access control controller engineere…

Add to cart for sale price
$89.99
Ships same business day
In stock

Quantity:

Adding to cart… The item has been added
Compatibility guidance available for your deployment
Certified experts for pre and post-sales support
Authorized sourcing and documentation support
Shipping and lead-time confirmation before install

Bryan

Talk to Bryan

200+ hrs training • U.S - based

Certified Expert • 877-277-7147

SDC/Security Door Controls SP403U S4000 Saturn Key Access

$89.99

Your recommended setup

Review items below — quantities update pricing automatically.

Item Qty Status Price

Bundle Summary

Bundle Subtotal: $0.00
Optional Add-Ons: $0.00
Services: $0.00
Total: $0.00

Overview

SKU: SP403U
Condition: New
Availability: Usually ships in 24 hours
Warranty Limited Lifetime Warranty
Description

SDC/Security Door Controls SP403U S4000 Saturn Key Retracts Access Controller

Overview

The SDC SP403U is a networked access control controller engineered for mid-to-large enterprise deployments. It manages up to 63 doors and supports 250,000 user credentials, making it suitable for campus, healthcare, and commercial installations requiring centralized credential management and scalability.

Technical Specifications

Communicates via OSDP and TCP/IP protocols for reliable integration into existing security infrastructure. Supports multiple credential formats including DESFire, MIFARE, NFC at 13.56 MHz, and 125 kHz proximity cards—enabling flexible reader deployment across mixed-credential environments without controller replacement.

Compatibility

Deploy with OSDP-compliant readers and standard IP network infrastructure. Integrates with access control software platforms supporting OSDP and TCP/IP protocols. Suitable for door controllers, credential management, and multi-building deployments requiring centralized administration.

Specifications
Product Type: Controller
Communication: OSDP, TCP/IP
credential_type: DESFire, MIFARE, NFC/13.56MHz, 125kHz Prox
door_capacity: 63 Door
max_users: 250000
Reader_Type: OSDP
Q&A
Reviews
Have Questions? Ask an Expert.

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources