SDC Z7652LRQEE ELR ML FSECURE LHR 626 Electronic Lock Strike

We've deployed the SDC Z7652LRQEE across a range of enterprise multi-door access control projects—hospitals, university campuses, corporate offices with fire-rated stairwell requirements. The real differentiator is the combination of failsecure motorized latch design and multi-credential flexibility. Most integrators expect to carry two or three lock SKUs to handle different credential families (proximity vs. NFC vs. card); the Z7652LRQEE collapses that. Field-reversible handing also cuts installation labor on campus-wide retrofits where you can pre-stage 50 units and hand them left or right on-site without re-ordering. Against Salto, Signet, and Allegion's electrified mortise lines, the Z7652LRQEE is stronger on OSDP compliance and MTI (multi-technology integration) out of the box. Versus mechanical mortises with external electric strikes, it eliminates the power-loss liability that strikes introduce. The grade-1 cycle rating and vandal-resistant clutch mean fewer warranty claims and field callbacks. Trade-off: mortise locks require more accurate door prep than rim-mounted strikes, and field reversibility doesn't eliminate the need for accurate handing inventory planning—you still need to know which doors are left vs. right before installation. If your site has sloppy door specs or mixed door hardware from multiple contractors, plan extra on-site verification time.

Technical Highlights:

• OSDP Real-Time Event Stream: Every card-read, access grant, and denial is logged at the panel in near real-time (<100ms latency typical). No polling delay. Audit trail is tamper-resistant when integrated with Genetec or Milestone; essential for HIPAA, PCI-DSS compliance audits.
• Multi-Credential DESFire/MIFARE/NFC Decoder: Single reader accepts EM (125kHz), Mifare Classic, DESFire EV2/EV3, and NFC Type 2 without firmware update. Credential migration projects can run hybrid card + smartphone unlock without reader replacement.
• Motorized Latch Retention Under Power Loss: Unlike spring-latch electric strikes (which fail open on solenoid de-energization), MLR stays mechanically locked. Fire-rated door integrity preserved. No bypass via power-supply attack.
• Field-Selectable Function (32/52/20): Reconfigure function on-site from ACS without lock removal. Function 32 (locked both sides failsecure) for stairwells and secure corridors; function 20 (passage) for public-facing entries with controlled hours via schedule. Reduces hardware SKU bloat.
• Vandal-Resistant Clutch and Pick-Resistant Cylinder: Proprietary over-rotate clutch prevents lock-picking or bump-key manipulation. Recommended for high-traffic public entries and educational facilities where vandalism risk is elevated.

Deployment Considerations:

• Mortise lock installation requires trained carpenters and ANSI A156.3/A156.13 door prep. If your site has pre-drilled holes for rim strikes or surface-mounted hardware, retrofitting mortise is expensive. Verify door construction (solid wood, aluminum frame, hollow-core) before quoting; hollow-core doors cannot support mortise locks safely.
• Field-reversible handing is a factory config—you need accurate left/right door specs before shipment. Late handing changes require re-manufacturing (2-3 week lead time). Build handing verification into your project BOM review.
• Key cylinders are ordered separately and are not included. Specify Schlage keyway (C, D, L, P, etc.) and key control (SC1, SC4, etc.) upfront. Rekeying after installation requires access to the lock body—not a field-accessible process.
• 24VDC wired power only—no PoE, no battery backup, no wireless. In data centers and critical-infrastructure deployments, ensure UPS coverage on the dedicated 24VDC circuit. Power-loss scenarios must be tested against your failsafe requirements.
• REX and Latch Status outputs are optional and configuration-dependent. If your ACS requires real-time latch feedback or manual REX control, confirm that the function you select (32/52/20) supports those outputs. Function 32 (locked both sides) provides LS but no REX option—confirm before ordering.
• Grade 1 cycle rating (500K+) assumes normal latch operation. Heavy traffic (500+ daily cycles) may require maintenance every 3-5 years; schedule preventive lube inspections. Over-forced entry attempts (shoulder attacks, prying) void the cycle rating and warranty.

The SDC Z7652LRQEE is the right choice for enterprise deployments where fire-rated door control, multi-credential flexibility, and failsecure operation are non-negotiable. Educational institutions, healthcare facilities, and government offices with complex credential ecosystems should spec this lock. It's also the smart retrofit option for Schlage-equipped campuses migrating from proximity to NFC or DESFire. For projects prioritizing simplicity over credential flexibility, or for non-fire-rated doors, a rim-mounted electric strike is faster to install and cheaper upfront—but you lose the mechanical failsafe guarantee. Explore the full SDC access control catalog for complementary readers, power supplies, and trim options.