HES 7000-LBM Fail-Secure Electric Door Strike
The HES 7000-LBM is a fail-secure electric door strike engineered for direct integration with access control systems in commercial, institutional, and high-security environments. Unlike fail-safe strikes that unlock during power loss, the 7000-LBM keeps the door locked when power is removed — a critical distinction for facilities where security cannot depend on continuous electrical supply.
Overview
Fail-secure operation means your door defaults to locked if power fails, the access control system reboots, or the power supply goes offline. This eliminates a major security vulnerability: an intruder cannot push through a door simply by cutting power to your access control panel. The 7000-LBM connects directly to your access control system's power and control outputs — typically 12VDC or 24VDC trigger signals — and requires no separate relay or delay module if your panel provides a configurable timed output. When your panel energizes the strike output, the electromagnetic latch releases and the door opens. The moment power drops, the latch snaps back to locked. For perimeter security, high-security rooms, server closets, and any facility where an unexpected unlocked door poses an unacceptable risk, this fail-secure behavior is the correct engineering choice.
The 7000-LBM is installed in a standard commercial doorframe mounting position — integrators familiar with frame-mounted electric hardware will find installation straightforward. The device is built for moderate to high daily traffic in commercial environments: office buildings, laboratories, secure storage areas, institutional access corridors, and data centers.
Key Features
- Fail-secure locking: Door remains locked when power is removed or access control system loses power. No bypass risk during outages, system resets, or maintenance shutdowns — a non-negotiable requirement for perimeter and high-security deployment.
- 12VDC or 24VDC control signal compatibility: Accepts trigger voltage from standard access control panels. Before purchase, confirm your panel outputs the matching voltage; using a 24VDC strike on a 12VDC panel will not function, and forcing the wrong voltage can damage the solenoid coil.
- Standard doorframe installation: Designed for conventional commercial door frame mounting. No special structural modification required for typical applications; integrators can install alongside standard door hardware.
- Direct panel integration: Wires directly to your access control system's power and control outputs. No separate relay module, controller, or delay timer needed — your panel's built-in timed output drives the strike directly, reducing hardware count and commissioning complexity.
- Electromagnetic operation, minimal moving parts: The solenoid and latch mechanism have fewer wear points than electromechanical alternatives. In high-cycle facilities (airports, university campuses, office parks), this translates to longer mean time between failures and lower maintenance cost over 5–10 years.
- Commercial-grade durability: Engineered for facilities with continuous security requirements. Repeated daily unlock/lock cycles in office, lab, and institutional environments are well within the design envelope.
Integration and Compatibility
The 7000-LBM integrates with any access control platform — whether standalone panel or enterprise system — that can supply the required control voltage (12VDC or 24VDC) and sufficient current to energize the solenoid. During commissioning, verify that your power supply has adequate capacity to handle the strike's inrush current; undersized power supplies will cause the strike to chatter, unlock intermittently, or fail to unlock reliably. Your access control system's timed output controls unlock duration: when the panel energizes the output (typically 600–900 milliseconds for a door buzz), the latch releases and the door can be pushed open. When the output de-energizes, the latch locks. Door sensors or request-to-exit buttons wired into your access control logic determine who can request unlock and for how long.
Work with your systems integrator to calculate power requirements and verify supply capacity before procurement. Undersized or improperly filtered DC supplies are the most common cause of field service calls on electric strikes.
When to Choose a Different Model
If your facility's building code or life safety plan requires fail-safe operation (door unlocks on power loss for emergency egress override), the 7000-LBM is not the correct choice. Fail-safe strikes are mandated in some jurisdictions for egress routes, stairwells, and emergency exits. Consult your local building authority and life safety engineer before selecting a strike type. If you need a fail-safe alternative in the same family, contact your integrator for equivalent models that unlock on power loss.
Frequently Asked Questions
Q: What happens to the 7000-LBM if the power supply fails?
A: The door remains locked. The electromagnetic solenoid requires continuous power to hold the latch open. When power drops, the solenoid de-energizes and the spring-loaded latch snaps back to locked. This is the fail-secure behavior — security is preserved during any power event.
Q: Can the 7000-LBM work with both 12VDC and 24VDC access control panels?
A: No. The strike is manufactured for either 12VDC or 24VDC operation. Applying the wrong voltage will damage the solenoid coil. Confirm your access control panel's output voltage before ordering, and specify the correct voltage when purchasing.
Q: Do I need a separate relay or time delay module to use the 7000-LBM?
A: No, provided your access control panel has a configurable timed output. You wire the strike directly to the panel's output. The panel's software controls unlock duration. If your panel lacks a timed output, you will need an external relay or delay module to energize the strike for a fixed duration during an access grant.
Q: What happens if the strike chatters or won't unlock reliably?
A: This is almost always a power supply issue — the supply is undersized or lacks adequate filtering. Work with your integrator to verify that the power supply has enough capacity (in amps) for the strike's inrush current, and that the supply is properly filtered to avoid voltage ripple that can cause solenoid chatter.
Q: Is the 7000-LBM suitable for outdoor doors?
A: The strike itself is designed for standard doorframe mounting in commercial environments. However, outdoor perimeter doors may require additional weatherproofing or housings depending on your climate. Consult your integrator about any enclosure or protection needed for your specific installation.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The HES 7000-LBM is a straightforward fail-secure strike for integrators who need predictable, no-surprise access control hardware. The core engineering choice here is simple: fail-secure operation defaults to locked when power is lost. That's not negotiable for perimeter doors or high-security rooms, and it's built into the 7000-LBM's electromagnetic design. No batteries, no backup power required — the solenoid simply de-energizes and the spring latch locks.
Technical Highlights:
- Fail-secure solenoid design: Power loss = locked door. Unlike fail-safe strikes, there is no way to compromise this by cutting power. This is exactly what you need for a perimeter door or secured room where an unexpected unlock during an outage is unacceptable.
- 12VDC or 24VDC operation: Confirm your access control panel's output voltage before purchase. Wrong voltage = dead solenoid coil. This is not a field-swappable decision — specify correctly upfront.
- Direct panel wiring, no relay needed: If your panel has a configurable timed output, the strike wires directly to it. That simplifies the control circuit and reduces the number of failure points. If your panel lacks timed outputs, you'll need an external relay or delay module — budget for that during system design.
Deployment Considerations:
- Power supply sizing is critical: Undersized power supplies cause chattering and intermittent unlock failures. The solenoid draws inrush current during energization. Verify your supply has adequate capacity (in amps) and is filtered to prevent ripple. This is the most common field failure mode on electric strikes — solve it in commissioning, not after installation.
- Fail-safe vs. fail-secure is a code decision: Some jurisdictions mandate fail-safe operation on egress routes for life safety. Before specifying the 7000-LBM, confirm your building code allows fail-secure operation for the door you're securing. If code requires fail-safe, this is not the right strike.
Deploy the 7000-LBM on perimeter doors, high-security rooms, server closets, and any facility-critical access point where an unlocked door during a power event presents an unacceptable risk. The fail-secure behavior is your insurance against bypass during outages, panel reboots, or supply failures — and that makes it the correct choice for perimeter and high-security deployment.
