SDC LR100SGK Electric Latch Retraction Controller
Overview
The LR100SGK is a wired electric latch retraction controller designed for multi-door access control deployments where centralized credential management and distributed reader support matter. It manages up to 63 doors with support for 250,000 user credentials, making it a practical choice for mid-to-large facility integrations where scaling credential issuance across multiple buildings or zones is a real requirement. The controller handles DESFire, MIFARE, NFC (13.56 MHz), and 125 kHz proximity credential types — meaning you can deploy mixed-vendor readers without forcing a rip-and-replace or maintaining separate credential ecosystems for different building zones.
Key Features
- 63-Door Management: Single controller handles up to 63 electrified doors, reducing the footprint of control hardware in server closets or equipment rooms and simplifying wiring runs to distributed readers across a facility.
- 250,000 User Credentials: Supports a quarter-million credential records, eliminating the need for credential server splitting in most enterprise deployments and enabling credential issuance to span multiple facilities or long-term contractor pools without architecture redesign.
- Multi-Technology Reader Support: Accepts DESFire, MIFARE, NFC, and 125 kHz proximity readers in the same system — valuable when integrating legacy proximity infrastructure with newer NFC-based credential migration or when different departments require different technologies.
- OSDP & TCP/IP Protocols: Dual-protocol support ensures compatibility with modern access control platforms (Milestone, OnSSI, Genetec, and proprietary VMS environments) while also supporting legacy serial OSDP installations, reducing integration friction when adding the LR100SGK to existing networks.
- Wired Connectivity: Hardwired architecture eliminates Wi-Fi reliability concerns in RF-heavy environments (warehouses, hospitals, manufacturing) and removes the need for separate network access point provisioning or roaming management.
- Flexible Credential Migration Path: Multi-credential support allows credentials to coexist during transition periods — you don't need to re-badge an entire facility at once or maintain parallel systems during technology upgrades.
Integration & Compatibility
The LR100SGK integrates with existing DESFire, MIFARE, NFC, and proximity reader infrastructure, making it a fit for facilities with mixed-vendor or legacy credential environments. Its support for both OSDP and TCP/IP simplifies integration into modern access control systems while maintaining backward compatibility with older reader deployments. It is suitable for educational institutions, corporate campuses, healthcare facilities, government buildings, and warehouse environments requiring centralized multi-door control without the complexity of a full networked access control server.
Frequently Asked Questions
Q: Does the LR100SGK require a separate access control management server?
A: The LR100SGK is a controller that can function in standalone mode or integrate with a centralized access control platform. For 63 doors and 250,000 credentials, most deployments pair it with a management server for policy enforcement, audit logging, and credential provisioning — but the controller itself can hold credential data locally.
Q: Can I integrate the LR100SGK with my existing Milestone or Genetec system?
A: Yes. OSDP and TCP/IP protocol support ensures compatibility with third-party platforms that support these standards. Verify with your VMS vendor that the LR100SGK is listed on their ONVIF or OSDP compatibility matrix.
Q: What reader types work with the LR100SGK?
A: DESFire, MIFARE, NFC (13.56 MHz), and 125 kHz proximity readers are all supported, as long as they output credentials in formats the controller can parse (typically Wiegand or serial formats).
Q: Is the LR100SGK suitable for outdoor door control?
A: The controller itself is designed for indoor installation. Mount it in a secured, climate-controlled enclosure. The readers and latch hardware you connect to it will determine outdoor suitability — ensure your readers and door hardware carry appropriate environmental ratings (IP67, etc.).
Q: How many credentials can the LR100SGK hold?
A: 250,000 credential records — sufficient for most mid-to-large deployments, multi-building campuses, and contractor credential pools without requiring off-controller storage or archival.
Q: What are the wiring requirements?
A: The LR100SGK is a wired controller. Confirm power supply specifications (voltage and amperage) with the manufacturer datasheet, and plan runs from the controller to each of the 63 door's latch release hardware — typically low-voltage direct connections or relay outputs depending on your latch type.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The LR100SGK is a solid mid-scale latch controller for facilities that need credential flexibility without over-engineering a full networked access control backbone. Most integrators deploy this when they're either migrating from legacy proximity systems to modern NFC or supporting a mixed-credential environment across multiple buildings. The 250,000 credential ceiling and 63-door limit define its market clearly — go larger and you'll want a distributed multi-controller architecture or a true server-based access control platform like Genetec or Milestone.
Technical Highlights:
- Multi-Credential Support (DESFire, MIFARE, NFC, 125 kHz): Eliminates the need to maintain separate credential ecosystems for different reader types — you can coexist older proximity badges with new NFC cards during a phased migration, reducing re-badging costs and administrative overhead.
- OSDP and TCP/IP Dual Protocol: Ensures compatibility with both legacy serial reader infrastructure and modern network-connected platforms, reducing integration friction when retrofitting into existing VMS deployments.
- 250,000 Credential Records: Sufficient for most enterprise single-facility deployments and multi-building campuses without credential server splitting or off-device archival, keeping on-site provisioning simple and reducing latency on access decisions.
Deployment Considerations:
- The 63-door ceiling means this controller is not suitable for large distributed campuses or multi-building complexes without parallel controllers — verify your door count early in the design phase.
- Wired connectivity is a strength in RF-congested environments (hospitals, manufacturing, warehouses) but requires conduit planning and switch provisioning — don't assume wireless will work here.
- Credential format compatibility depends on reader output (Wiegand, serial, etc.) — confirm your existing readers can output formats the LR100SGK can parse before committing to integration.
Deploy the LR100SGK in corporate campuses, educational institutions, and healthcare facilities where centralized multi-door control, credential portability, and legacy reader coexistence matter — but where you don't yet need the complexity (or cost) of a distributed multi-controller architecture or full access control server. It's a practical stepping stone for integrators moving clients from proximity-only to mixed-credential environments.
