SDC 1561ITC Concealed EM Lock with Integrated Controller
Overview
The SDC 1561ITC is a concealed electromagnetic lock paired with an integrated access control controller, designed to consolidate locking and control logic in a single form factor. This reduces installation complexity and panel space requirements compared to split-architecture deployments. Rated for systems supporting up to 63 doors per controller and 250,000 user records, the 1561ITC scales across mid-to-large facility installations — think multi-floor office parks, logistics hubs, or campus environments where credential flexibility and door count matter.
Key Features
- Integrated Lock & Controller Design: Eliminates separate strike and control panel, cutting wiring runs and reducing cabinet footprint. For a 20-door warehouse retrofit, that means fewer conduit runs and one fewer piece of equipment to mount and power.
- 24VDC Operation: Standard industrial voltage keeps power architecture simple and interoperable with existing access control infrastructure — no exotic supply requirements.
- OSDP Protocol Support: Open Supervised Device Protocol ensures vendor-neutral integration. Works with OSDP-compliant readers and control platforms, avoiding proprietary lock-in. Access control systems built on OSDP gain genuine interoperability.
- TCP/IP Connectivity: Network-based communication enables remote status monitoring, audit logging, and credential updates without dedicated serial lines — easier to manage across distributed locations.
- Multi-Protocol Credential Support: Accepts DESFire, MIFARE, NFC at 13.56 MHz, and 125 kHz proximity cards. Supports phased credential migration — you can run mixed card technologies during the transition from legacy 125 kHz to modern NFC systems without replacing hardware.
- 250,000 User Record Capacity: Holds enough credential data for large enterprises or complex role-based access schemes without requiring frequent synchronization from a central server.
- Up to 63 Doors Per Controller: Single controller manages mid-size facility footprints. Scales to larger campuses via network-connected controllers without requiring master/slave hierarchies.
Integration & Compatibility
The 1561ITC is purpose-built for security integrators deploying OSDP-based access control systems. Standard door frame installations accommodate concealed mounting — the lock body sits within the frame, minimizing visible hardware and aesthetic impact. Multi-protocol credential support accommodates environments where readers are already deployed with mixed legacy and modern credentials. Install a DESFire reader on one floor, a 125 kHz reader on another, and the 1561ITC controller recognizes both without reconfiguration. This flexibility is particularly valuable in phased deployments where replacing all readers simultaneously isn't practical or cost-effective.
For integrators selecting access control locks, the consolidated architecture of the 1561ITC reduces bill-of-materials cost and installation labor compared to distributed reader-lock-panel configurations. The TCP/IP interface integrates cleanly with modern VMS platforms and access management software that support standard network protocols.
When to Choose a Different Model
If your installation requires support for more than 63 doors on a single controller, or if you need credential capacity exceeding 250,000 users, evaluate higher-capacity variants within the SDC product family. If integration must use legacy wiegand or clock-and-data protocols rather than OSDP, confirm with your integrator that a different lock model better matches your reader ecosystem.
Frequently Asked Questions
Q: Does the SDC 1561ITC support remote unlock commands via TCP/IP?
A: Yes. TCP/IP connectivity enables networked unlock commands and status queries from authorized platforms. Confirm your access control management software or VMS supports OSDP-enabled lock control.
Q: Can I mix 13.56 MHz and 125 kHz readers on the same 1561ITC controller?
A: Yes. The 1561ITC supports both DESFire/MIFARE/NFC (13.56 MHz) and 125 kHz proximity credentials. You can deploy mixed reader types across doors without replacing the lock or controller.
Q: What is the maximum number of doors a single 1561ITC can control?
A: Up to 63 doors per controller. For larger installations, deploy multiple controllers networked via TCP/IP.
Q: Is the 1561ITC suitable for concealed mounting in standard commercial door frames?
A: Yes. The lock is designed for concealed strike installation in standard door frame assemblies. Consult the datasheet for frame-reinforcement and cutout specifications.
Q: Does the 1561ITC include local battery backup for power loss scenarios?
A: See the product datasheet for battery backup specifications and hold-open duration. Power backup requirements should be verified during system design.
Q: What credentials are supported if I need to migrate from 125 kHz to NFC?
A: The 1561ITC supports 125 kHz proximity, MIFARE, DESFire, and NFC at 13.56 MHz. Deploy NFC readers while keeping existing 125 kHz readers active, and decommission legacy readers on your schedule.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The SDC 1561ITC consolidates lock and control logic in a way that simplifies both installation and long-term maintenance. Most integrators I work with appreciate consolidated hardware — it cuts cable runs, reduces panel clutter, and speeds commissioning. The 1561ITC's support for 63 doors and 250,000 credentials means you're not scrambling to add secondary controllers on medium-sized installations.
Technical Highlights:
- OSDP Protocol: Guarantees interoperability with reader ecosystems and VMS platforms that speak OSDP. No proprietary lock-in. If you're building on open standards, this matters.
- Multi-Protocol Credentials (13.56 MHz + 125 kHz): Reduces hardware churn during technology transitions. One lock handles legacy and modern readers — valuable in large campuses where simultaneous reader replacement isn't feasible.
- TCP/IP Networking: Enables real-time audit trails, remote monitoring, and credential updates across the network. No need for sneaker-net synchronization or dedicated serial lines to each lock.
- 24VDC Standard Voltage: Integrates seamlessly with existing industrial power infrastructure. No exotic supply requirements or voltage regulators needed.
Deployment Considerations:
- Door count ceiling of 63 per controller requires planning on larger campuses. Multi-controller installations must be networked and properly provisioned for failover and audit logging.
- Concealed mounting requires proper frame preparation and reinforcement. Verify door frame thickness and materials support the strike during installation planning.
- 250,000 credential capacity is substantial but not unlimited. Enterprise deployments with multiple facilities may need credential synchronization strategies to avoid orphaned or duplicate records.
Ideal for mid-to-large logistics facilities, multi-floor office parks, and educational campuses transitioning to OSDP-based access control. The integrated architecture and multi-protocol flexibility make it a strong choice if you're building a standards-compliant system and need to defer full hardware replacement across an existing reader base.
