SDC LR100FCK-EM 4-Door Electronic Lock Release Controller Kit
Overview
The SDC LR100FCK-EM is a wired 4-door electronic lock release (ELR) controller designed to manage access across multiple entry points in mid-to-large facilities. This First Choice kit integrates OSDP (Open Supervised Device Protocol) and TCP/IP communication, enabling you to deploy networked door control alongside modern access platforms and third-party management systems without vendor lock-in. Support for HID credential readers means you can leverage existing card infrastructure — no hardware rip-and-replace. With capacity for up to 250,000 user records, the LR100FCK-EM scales from small multi-door installations to enterprise-class deployments.
Key Features
- 4-Door Management: Controls up to four independent door locks via single networked unit, reducing the number of controllers and points of failure compared to managing each door separately.
- OSDP & TCP/IP Dual Protocol Support: Connects via both OSDP (industry-standard for reader-to-controller communication) and TCP/IP (Ethernet), allowing flexible integration with legacy and modern access control platforms without custom gateways.
- HID Credential Compatibility: Accepts HID Prox, iClass, and Mobile Connect readers, so you retain existing card stock and reader investments during system migration or expansion.
- 250,000 User Record Capacity: Handles large user populations typical in warehouses, offices, and industrial facilities — scales as your organization grows without replacing the controller.
- Wired Connectivity: Hardwired installation via Ethernet provides reliability and deterministic response times required in security-critical environments; eliminates RF interference concerns in dense metal warehouse racking.
- First Choice Kit Format: Ships as a complete kit, reducing lead time and assembly labor — integrators unbox and deploy without sourcing separate power supplies, cable assemblies, or mounting hardware.
Integration & Compatibility
The LR100FCK-EM works with any OSDP-compliant access control platform — Milestone, Genetec, Hanwha, and others support OSDP reader and controller integration. TCP/IP connectivity allows direct Ethernet connection to your network infrastructure, enabling centralized management and audit logging. HID reader support ensures you can replace or add doors without reprogramming card encoding or abandoning existing credential stock. Integrators deploying networked access control systems often choose this controller when retrofitting multi-tenant warehouses or expanding existing single-door setups to cover loading docks, personnel gates, and secure storage areas.
When to Choose a Different Model
If you need wireless connectivity (no Ethernet run to the door), or if your existing infrastructure uses non-HID credentials exclusively, evaluate alternative SDC controllers in the same family. For single-door applications, a smaller controller may offer better cost efficiency. If you require advanced biometric integration or direct connection to cloud-based identity providers, consult a systems integrator about whether the LR100FCK-EM needs supplementary middleware.
Deployment Context
This controller is well-suited to warehouse access control, multi-unit residential buildings, office campuses, and industrial facilities where centralized management and credential portability matter. Wired Ethernet eliminates battery maintenance and RF coverage planning, making it a pragmatic choice for environments where Ethernet is already deployed. The 250,000-user ceiling handles medium-to-large enterprises; in multi-building deployments, multiple LR100FCK-EM units coordinate through your access control management platform.
Frequently Asked Questions
Q: Can the LR100FCK-EM work with non-HID readers?
A: The kit is designed for HID credentials (Prox, iClass, Mobile Connect). Integration with other credential types depends on your access control platform's support and may require additional gateways.
Q: What happens if the Ethernet connection to the controller is lost?
A: The controller retains local decision-making based on cached credentials and access rules. Consult the datasheet and your integrator for offline mode behavior and duration limits.
Q: How many users can be assigned to a single door?
A: The LR100FCK-EM supports 250,000 user records across all four doors, distributed according to your access control policy.
Q: Does the kit include mounting hardware and cables?
A: Package contents vary by order configuration. Consult the product datasheet or your supplier for exact inclusions; most kit formats include essential wiring and bracket hardware, but verify before installation planning.
Q: Is the LR100FCK-EM compatible with Milestone XProtect?
A: OSDP and TCP/IP support enable integration with Milestone and other standards-based platforms. Confirm with Milestone your specific version supports the LR100FCK-EM controller model via their certified hardware list.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The LR100FCK-EM is a straightforward 4-door wired controller that solves a specific problem: integrating multi-door lock release into an OSDP and TCP/IP-native access control stack without custom middleware. The 250,000-user capacity is a real asset for operations that grow — you're not replacing the controller when you go from 50 to 5,000 cardholders.
Technical Highlights:
- OSDP + TCP/IP Dual Protocol: Eliminates the need for reader-to-controller translation layers. Both OSDP (encrypted reader-to-controller channel) and TCP/IP (network management plane) run natively, reducing latency and simplifying troubleshooting on networked systems.
- HID Credential Support: Prox, iClass, and Mobile Connect readers work out of the box. In mixed-credential environments where Prox is legacy and iClass is new, you can stage credential migration over months without controller replacement.
- 4-Door Density: One LR100FCK-EM manages four independent electronic strikes. Compare this to four single-door controllers: you get one IP address, one Ethernet port, one power feed, and one management interface instead of four — real cost and complexity savings in dense warehouse loading areas or multi-unit buildings.
Deployment Considerations:
- Ethernet-Only Connectivity: No wireless option. In facilities where running Ethernet to remote doors is impractical (sprawling outdoor perimeters, temporary security booths), you'll need supplementary wireless bridge hardware or a different controller family.
- Offline Mode Behavior: The datasheet will specify how long the controller retains cached access rules and credentials if the network drops. Plan your redundancy and link failover strategy accordingly — don't assume it's suitable for mission-critical single points of failure without verification.
- User Capacity Is Shared Across Doors: The 250,000 user ceiling applies to all four doors combined, not per door. In large facilities, this is rarely a constraint, but in early designs, confirm your user population (including service accounts, audit records, and archived cardholders) won't exceed the limit.
Deploy the LR100FCK-EM when you're standardizing on OSDP and Ethernet-native access control infrastructure — warehouses moving from legacy badge readers to modern identity platforms, multi-tenant facilities consolidating scattered door systems, and enterprises retiring proprietary access controllers. The HID support is the practical win: you keep your existing card stock and reader hardware working while you move the policy layer to a modern platform.
