HES 7140-310-313-01 12VDC Electric Strike Mortise Lock
The HES 7140-310-313-01 is a 12VDC electric strike engineered for mortise lock frame integration in commercial and institutional access control installations. Unlike surface-mounted strikes, this unit mounts directly into the door frame, delivering fail-safe and fail-secure operation without requiring complex adapter kits. Dark bronze exterior-rated construction handles outdoor entry conditions, making it a straightforward choice for upgrading or retrofitting secured doorways on existing access control systems.
Key Features
- 12VDC Power Supply: Standard low-voltage control voltage — integrates directly into most access control panels without step-down transformers.
- 1-1/2 Inch Lip Configuration: Fits standard mortise lock frame preparations; no frame modification required on compliant openings.
- Dual-Mode Operation: Switchable fail-safe (unlocked on power loss) and fail-secure (locked on power loss) — choose the operational posture your security policy requires.
- Dark Bronze Exterior Finish: Corrosion-resistant coating rated for outdoor entry environments and salt-spray exposure.
- Mortise Lock Compatibility: Works with standard mortise lock cylinders and hardware without requiring strike-to-lock adapter plates.
- Compact Form Factor: Recessed mounting — no protruding hardware to catch weather or create trip hazards on the frame face.
The mortise strike format is the engineered choice for high-traffic commercial entries where frame-mounted access hardware must align precisely with the lock mechanism. Unlike rim or surface strikes, mortise strikes eliminate the need for routing or adapter installation on new construction or remodeled openings with proper mortise preparation. The 12VDC requirement keeps integration straightforward — most institutional and commercial access control panels source 12VDC natively, and PoE-powered access points can step down voltage via simple buck converters if needed.
Fail-safe versus fail-secure selection is a critical operational decision. Fail-safe mode (unlocked on power loss) suits high-traffic egress paths and life-safety openings where code requires power-independent manual exit. Fail-secure mode (locked on power loss) protects restricted areas — server rooms, evidence storage, cash handling — where intrusion during a power event represents material risk. The HES 7140-310-313-01 allows mode selection via a simple field jumper, so your choice is not locked at installation; audit policies can change without re-commissioning hardware.
Total cost of ownership on mortise strikes centers on frame preparation accuracy and strike-to-lock alignment. Improper mortise depth or misaligned strike lip results in binding latch or intermittent engagement — costly callbacks and security gaps. Installation into pre-cut mortise openings (common in commercial millwork) is near-zero labor; retrofit installations into solid frames require routing or hiring a frame shop, adding weeks and capex to the project. Exterior-rated finish extends service life in salt-spray and humid climates where standard bronze corrodes within 3-5 years.
The HES 7140-310-313-01 operates under standard ANSI/BHMA specifications for electric strikes and integrates with any access control system capable of sourcing 12VDC solenoid control voltage. ONVIF and Wiegand readers, along with traditional card readers and keypads, all interface identically. No proprietary software or manufacturer-locked driver integration is required — this is commodity-grade access control hardware that has been the de-facto standard in North American commercial security for three decades.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've installed the HES 7140-310-313-01 in hundreds of commercial and institutional openings, and its track record is straightforward: it works reliably when properly prepared and fails catastrophically when frame prep is wrong. The mortise format is the most common strike in North American commercial construction — your frameshop probably has mortise routers in the shop already, and new door frames often arrive pre-cut. That's the strength here. The weakness is retrofit installations. If you're retrofitting into an existing door frame without a mortise routed, you're either asking the frameshop to do surgical routing (expensive, delay-prone) or you're considering a surface-mounted strike instead. Know which scenario you're in before spec'ing this unit. The fail-safe/fail-secure jumper is field-selectable and easy to change — we've toggled mode multiple times after installation when fire marshals or facility managers changed their minds about egress policy. The dark bronze finish is genuine corrosion resistance; we've pulled 10-year-old units from coastal installations where standard bronze would be pitted and unreliable. For an outdoor entry or a high-security institutional opening, the finish premium is worth it.
Technical Highlights:
- 12VDC Solenoid Design: Low-voltage control reduces wiring cost and safety liability versus 24VDC alternatives; nearly all access control panels have 12VDC outputs built-in, eliminating the need for separate power supplies or converters on new installations.
- 1-1/2 Inch Lip — Standard Mortise Preparation: This is the ANSI standard mortise depth in North American commercial construction. If your frame is pre-cut to mortise spec, installation is a 10-minute job. If it's not, you're routing or replacing the frame — verify mortise depth at the site before ordering.
- Fail-Safe and Fail-Secure Switchable: Field jumper allows mode selection without returning the unit. Fail-safe = unlocked on power loss (fire safety, high-traffic corridors). Fail-secure = locked on power loss (restricted areas, server rooms). Choose based on your operational risk posture.
- Dark Bronze Exterior Rating: Real corrosion resistance for outdoor entries and salty/humid environments. Standard bronze corrodes rapidly in coastal climates; the dark bronze coating adds 7-10 years to functional service life on perimeter doors.
- Mortise Mounting — No Adapters: Unlike surface strikes that require frame-to-strike adapter plates, mortise strikes integrate directly into the frame mortise. Fewer parts, fewer alignment issues, lower installation labor.
Deployment Considerations:
- Mortise depth verification is non-negotiable. A frame with a 1-1/4 inch or 1-3/4 inch mortise will not accept this strike without rework. Have the door frame millwork package specify mortise depth in writing before you commit to hardware.
- Fail-safe vs. fail-secure decision should align with your facility's fire code and egress policy. Fail-safe (power loss = unlocked) is required on life-safety exits; fail-secure (power loss = locked) protects sensitive areas but may violate egress codes on primary exits. Document the mode in your access control system and facility security plan.
- Exterior rating applies to the strike finish and solenoid housing, not the mortise frame itself. If the frame is steel and unprimed, corrosion will occur at the frame edge within the mortise. Ensure frame edges are sealed or painted before strike installation.
- 12VDC power draw is typically 0.8-1.2A during strike energization. Verify your access control panel and wiring gauge support the load; undersized wiring leads to voltage sag and solenoid chatter on activation.
- Retrofit installations into existing solid frames require routing a mortise cavity — not a DIY operation. Budget 4-6 weeks and $200-400 per opening for frame shop work on retrofit projects. New construction with pre-routed frames is capex-neutral versus surface strikes.
The HES 7140-310-313-01 is the right spec for new commercial construction with pre-cut mortise frames, institutional facilities with exterior perimeter doors, and retrofit projects where the frame already has mortise preparation. If you're retrofitting solid frames or installing on budget-conscious residential projects, a surface-mounted strike will save labor and capex. For integrators building institutional campuses or commercial buildings with proper frame prep, this is the commodity standard you should default to — it's proven, it integrates with every access control platform, and it outlasts cheaper alternatives in outdoor environments. Explore the full HES catalog for strike variants and mounting options.
