SDC Z7852RQE 12/24VDC Deadbolt Strike Lock
The SDC Z7852RQE is a solenoid-controlled mortise deadbolt strike designed for networked access control retrofits and new construction where a single lock body replaces mechanical locksets without frame modification. Field-selectable dual voltage (12/24VDC) and function options—failsafe/failsecure, locked sides configurations—mean you configure once and deploy across multiple doors without inventory sprawl. Wired OSDP and TCP/IP connectivity integrate with modern access control panels and readers supporting DESFire, MIFARE, NFC/13.56MHz, and 125kHz proximity credentials. The Grade 1 mortise design with vandal-resistant clutch engineering handles institutional and commercial traffic; the lock remains latched when de-energized, meeting fire-door code requirements and ensuring fail-safe operation during power loss.
Key Features
- Multi-Credential Support: DESFire, MIFARE, NFC/13.56MHz, and 125kHz proximity in a single lock body. Eliminates separate reader hardware for legacy and modern credential types on the same door.
- Dual Voltage Field-Selectable: 12/24VDC configuration set at installation. Streamlines supply chain—one SKU covers both low-power (12V) and standard institutional (24V) deployments.
- Networked Capacity: Up to 250,000 users across 63 doors via OSDP and TCP/IP wired control. Centralized credential management scales retrofit projects without panel fragmentation.
- Retrofit-Ready Mortise Design: Replaces most mechanical locksets in existing frames; no frame cutout modification required. Satin chrome (626) finish; field-reversible handing (LH/RH) accommodates left and right door swings.
- Fail-Safe Deadbolt Latch: Remains latched when de-energized; solenoid strike only energizes on authorized credential read. Compliant with ADA and fire-door unlock logic; no external hold-open hardware needed.
- Monitored Strike Outputs: Optional Request-To-Exit (REX), Door Position Status (DPS), Latch Status (LS), and Deadbolt Status feedback. Integrates with any access control panel supporting monitored strike inputs for breach/tamper detection.
- Vandal-Resistant Clutch: Proprietary design protects against forced manipulation and pick attempts. Grade 1 ANSI/BHMA certification for heavy-duty institutional use.
- Schlage Trim Compatible: Z78 series compatibility retains familiar outside/inside trim and key cylinder integration; trim sold separately.
The Z7852RQE fits two core retrofit scenarios: (1) replacing worn mechanical mortise locks on existing doors while adding networked access control, and (2) new construction where standardized credential readers and back-end panels require a mortise deadbolt strike that accepts multiple card types without reader proliferation. The field-selectable voltage eliminates a common integration pain point—testing voltage availability on site, then ordering a different SKU. Set it once at installation, and the lock is ready for panel integration immediately.
Wired OSDP and TCP/IP connectivity means the lock reports real-time status (open/closed, latch position, deadbolt state) to the access control panel. This is essential for doors that demand audit trails and breach alarms. Unlike wireless-only strikes, wired architecture guarantees no signal loss or latency in high-RF-noise environments (parking garages, industrial floors). The 250,000-user capacity and 63-door support scale across medium-to-large retrofit projects without back-end reader duplication or credential server sprawl.
Deployment context matters: the Z7852RQE is purpose-built for institutional retrofits (K-12 schools, universities, hospitals, detention) where mechanical locks are being systematized into access control for the first time. It is equally viable for corporate office retrofits where a subset of doors—executive suites, IT closets, secure storage—need to transition from keyed to credential-controlled. The mortise form factor and satin chrome finish blend into existing trim aesthetics; integrators can spec this lock without triggering architectural review cycles on renovation projects.
The SDC Z7852RQE is backed by a lifetime manufacturer warranty and is fully compatible with new and retrofit applications using OSDP or TCP/IP access control platforms (Salto, Gallagher, Genetec, Avigilon, Honeywell systems, and integrator-deployed open-protocol stacks). Consult the full datasheet for function codes, finish options (626 Dull Chrome, Bright Chrome, Dull/Bright Brass, Bronze, Dark Oil Rubbed Bronze, Stainless), and handing configurations. For integrators managing mixed-credential legacy estates, the multi-card support eliminates the cost and complexity of parallel reader infrastructure.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the Z7852RQE across university campuses, K-12 retrofits, and corporate office expansions where the mandate was clear: eliminate keyed locks on high-traffic doors without gutting frames and re-hanging doors. The Z7852RQE solves that problem cleanly. The mortise design slides into existing cavities—frame carpenters don't panic, and project schedules stay intact. What separates this strike from cheaper alternatives is the combination of field voltage selection and the vandal-resistant clutch. On a 200-door retrofit, being able to set 12VDC or 24VDC once at installation (rather than ordering two different SKUs and managing inventory) saves coordination overhead. The clutch engineering is real: we've seen deliberately-abused test units at trade shows that other mortise locks would have failed on; the Z7852RQE keeps functioning. The multi-credential support is the silent win—DESFire, MIFARE, NFC, and 125kHz all in one body means a migrating institution can retire legacy proximity readers gradually instead of flag-day everything. The fail-safe deadbolt (latched when de-energized) is essential compliance for fire doors and ADA-regulated egress. Panel integrators often overlook this: they assume a strike is just a solenoid. The Z7852RQE's deadbolt design means it plays by fire-code rules automatically.
Technical Highlights:
- Dual Voltage Field-Selectable (12/24VDC): Set voltage at installation via internal jumper—no SKU variation, no second-guessing power availability on site. Real projects use both; standardizing on one SKU cuts supply-chain complexity by half. Most institutional integrators prefer 24VDC for longer cable runs and panel isolation, but retrofit sites with legacy 12VDC distributed power benefit immediately.
- Grade 1 ANSI/BHMA Mortise with Vandal-Resistant Clutch: The clutch is hardened against forced entry and pick tools. We've installed these on doors that receive 500+ transit events per day (medical campus main entrance, library security gates); the mechanism stays crisp. Other budget mortise locks exhibit latch creep or solenoid chatter under that load. Not this one.
- Monitored Strike Outputs (REX, DPS, LS, Deadbolt Status): Optional monitoring provides door position, latch state, and deadbolt confirmation back to the panel. For high-security doors (server rooms, evidence storage), this feedback is non-negotiable. Budget strikes omit monitoring—you energize and hope. The Z7852RQE lets you verify the lock actually cycled.
- Multi-Credential Support (DESFire, MIFARE, NFC, 125kHz): One physical lock body accepts four credential technologies. Critical for institutions migrating from legacy proximity card to NFC or DESFire. You don't retrofit the hardware every time the credential tech changes; the lock is already ready.
- Retrofit Mortise Form Factor: Fits 99% of existing mechanical mortise cavities. No frame modification, no door rehang. The delta in labor cost between frame-modification and straight swap is easily $200–500 per door on a 100-door project.
- Fail-Safe Deadbolt Design: Stays latched when de-energized. Critical for fire-code compliance and ADA egress. The lock never traps occupants; power loss = latched, unlocked state.
Deployment Considerations:
- Voltage selection happens at installation (internal jumper)—verify site power availability before the door frame is ready. A second trip to change from 12VDC to 24VDC wastes a day.
- Trim (cylinders, outside lever, inside thumbturn) is sold separately and must be Schlage Z78-series compatible. Specify trim before ordering the lock body; mismatched trim is the #1 retrofit integration failure. Verify with your Schlage distributor if existing trim can be reused or if new trim is required.
- Handing is field-reversible (LH, RH, LHR, RHR), but latch direction is set at installation. Confirm door swing direction and latch hand (inside-opening vs. outside-opening) before final assembly. Reversing latch hand on-site requires disassembly.
- REX, DPS, and Deadbolt Status monitoring are optional. If your access control panel doesn't support monitored strike inputs, you're energizing blind. Confirm panel capability before spec. A panel upgrade may be more cost-effective than operating without feedback on critical doors.
- The Z7852RQE is wired (OSDP/TCP/IP), not wireless. Plan conduit and power runs early. For retrofit projects in finished ceilings or hard-to-cable spaces, wireless alternatives (if your panel supports them) may be cheaper to install, but wired is more reliable.
- Solenoid strike draw is standard 12/24VDC (typical 0.5–1A momentary). Verify your access control panel or power supply can handle aggregate solenoid loads across all doors. A 63-door deployment can draw significant peak current; undersized power supplies cause nuisance lock failures under load spikes.
The Z7852RQE is the right choice for medium-to-large institutional retrofits where cost control and deployment speed matter, and where multi-credential support reduces reader proliferation. If you're managing legacy proximity cards alongside newer NFC or DESFire migrations, this lock eliminates the dual-reader problem. Spec this for offices, schools, hospitals, and corporate facilities where existing mortise cavities need to transition to access control without frame surgery. For more options and related electrified hardware, visit the SDC catalog.
