SDC 101-KDENA 4-Door Access Controller with Key Switch
Overview
The SDC 101-KDENA is a wired 4-door access control controller designed for mid-scale enterprise facility deployments where credential capacity and protocol flexibility matter. This unit handles up to 250,000 user credentials—enough for a large campus or multi-tenant office—and supports both OSDP and TCP/IP network connectivity, meaning you're not locked into a single integration path. The integrated key switch provides emergency manual override access without requiring a separate unlock mechanism, which simplifies both installation and emergency procedures.
Key Features
- 4-Door Capacity: Manages access across four independent door zones, allowing you to segment a facility into arrival lobbies, secure corridors, server rooms, or executive areas without needing multiple controllers.
- 250,000 Credential Storage: Stores a quarter-million user credentials on-device, reducing dependency on constant network queries for access decisions. This matters in environments with high staff turnover or multi-shift operations where credential provisioning happens frequently.
- OSDP & TCP/IP Dual Protocol Support: OSDP (Open Supervised Device Protocol) provides vendor-neutral reader communication; TCP/IP enables direct network integration with your VMS or access management platform. You can mix reader types and backbone technologies without proprietary lock-in.
- HID Credential Compatibility: Works with HID card, mobile, and biometric readers—the most widely deployed credential ecosystem in North America. If your facility already has HID infrastructure (badges, fobs, proximity readers), you plug in directly.
- 24VDC Operation: Operates at 24 volts DC, a standard in access control installations. Most electromagnetic strike locks and supplemental sensors run on the same voltage rail, simplifying power distribution and reducing the number of separate supply lines you need to run and manage.
- Integrated Key Override: Manual key switch eliminates the need for a separate bypass module or hardwired override path. In emergencies (fire, power failure, false lock), personnel can physically unlock doors without network dependency.
Integration & Compatibility
The 101-KDENA integrates with keypad reader hardware, electromagnetic strike locks, and door sensors. Its dual-protocol design makes it a natural fit for access control system deployments that already use OSDP readers or are planning a migration away from proprietary platforms. The controller supports HID credential formats, so if you're standardizing on HID across your organization, this device works within that ecosystem without additional translation layers.
For systems integrators planning multi-site rollouts, the 101-KDENA's wired backbone and large on-device credential cache reduce network load compared to cloud-dependent access platforms—an advantage in facilities with unreliable WAN links or strict latency requirements.
Frequently Asked Questions
Q: What reader types does the 101-KDENA support?
A: The controller supports HID-compatible readers including proximity cards, smart cards, and mobile credentials, via OSDP or TCP/IP interfaces. Consult the datasheet for specific reader model compatibility.
Q: Can I daisy-chain multiple 101-KDENA units on one network?
A: Yes. Multiple controllers can share TCP/IP or OSDP network infrastructure, allowing you to scale beyond 4 doors by deploying additional units across your facility.
Q: What happens if the network link fails?
A: The 101-KDENA stores 250,000 credentials locally. Access decisions for enrolled users continue to work offline until the controller re-syncs with the central VMS—no manual unlock intervention needed unless you've revoked a credential.
Q: Is the key switch weatherproof?
A: The key switch is rated for standard indoor enclosure mounting. If deploying outdoors, house the controller in an environmental enclosure rated IP66 or higher.
Q: What voltage and current do I need for the strike locks and sensors?
A: The controller outputs 24VDC. Size your supply based on the cumulative draw of all four door strikes, readers, and sensors. Most standard electromagnetic locks draw 0.5–1.2A per lock.
Q: Does the 101-KDENA work with Milestone, Genetec, or Axis access management?
A: OSDP and TCP/IP compatibility means integration is possible with VMS platforms that support open standards. Verify specific version support with your access management software vendor before deployment.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've deployed a lot of mid-scale access control systems, and the SDC 101-KDENA sits in a sweet spot: it's not undersized for a 50–500 user facility, but it doesn't overcomplicate deployments where you don't need the feature creep of enterprise cloud platforms. The real value here is the 250,000 credential cache and dual-protocol support. That credential capacity means you can push auth decisions to the edge device without hammering your network every time someone swipes a badge.
Technical Highlights:
- 250,000 On-Device Credentials: Stores a quarter-million user records locally. In a facility with 10 doors across 3 buildings, this eliminates constant queries to a central server. Even if your WAN link drops, the 101-KDENA keeps making access decisions based on enrolled users—downtime is measured in what you actively revoke, not in network availability.
- OSDP & TCP/IP Dual Support: OSDP gives you vendor-neutral reader communication; TCP/IP lets you integrate directly with Milestone, Genetec, or other open-standard VMS platforms. You're not paying a proprietary tax for cross-platform compatibility.
- 4 Independent Door Zones: Each door runs its own access policy. Lobby, secure corridor, server room, and executive floor don't have to share the same credential rules—important when you have contractors, guests, and employees with different access windows.
Deployment Considerations:
- The 101-KDENA is wired—there's no wireless option. If your facility lacks Cat6 runs to all four doors, budget for infrastructure work or consider a cloud-first architecture instead.
- The integrated key switch is a plus, but it's only useful if someone is physically on-site and authorized to use it. In a fully remote facility (data center, unmanned warehouse), this feature doesn't help you much.
- 24VDC power must be sized for all four strikes, readers, and sensors simultaneously. A 5A supply isn't enough if you're locking down four electromagnetic strikes at the same time. Calculate cumulative draw first.
Best fit: enterprise offices, campuses, or mid-market facilities with 50–500 staff, existing HID infrastructure, and a preference for wired reliability over cloud connectivity. If you're replacing a proprietary analog system or want to avoid vendor lock-in, the 101-KDENA's OSDP and TCP/IP flexibility makes it a solid choice.
