Electric Strike vs Magnetic Lock: A Practical Comparison
Choosing between an electric strike and a magnetic lock is one of the most consequential decisions in any access control project, affecting door security, egress compliance, power consumption, and long-term maintenance costs. Both devices allow remote or credential-based door release, but they operate on fundamentally different principles, suit different door types, and carry distinct failure modes. Understanding the technical distinctions before specifying or installing either hardware type saves time, money, and potential liability.
Electric Strike vs Magnetic Lock Overview
An electric strike replaces the traditional fixed strike plate in a door frame. When power is applied — or removed, depending on configuration — the strike’s keeper pivots or retracts, allowing the latch or deadlatch of a standard lockset to pass through. The door itself retains its existing hardware: knob, lever, or panic device. Because the mechanical latch is still present, an electric strike generally provides a familiar, intuitive user experience. The door looks and feels like a conventional locked door.
A magnetic lock, often called a mag lock or electromagnetic lock, works on an entirely different principle. A steel armature plate is mounted to the door, and an electromagnet is mounted to the frame or header. When energized, the magnet holds the armature with a holding force commonly rated between 600 lb and 1,200 lb. There is no latch, no bolt, and no mechanical interlock. The door is held purely by electromagnetic attraction. Release happens by de-energizing the coil, which occurs when a valid credential is presented or when the power fails.
The core distinction is mechanical versus electromagnetic retention. Electric strikes rely on a latch mechanism that exists independently of power; magnetic locks rely entirely on electrical current. That single difference cascades into nearly every other consideration — from fail-safe behavior to door type compatibility to code compliance.
Key Factors in the Electric Strike vs Magnetic Lock Decision
Door type is often the deciding factor. Electric strikes require a frame rabbet or a surface-mounted adapter and are designed for doors with a latch: wood or hollow-metal frames with standard door preps work well. Magnetic locks, by contrast, mount to the door header and work on virtually any door — wood, aluminum storefront, glass, even frameless glass with a Z-bracket kit. Sliding doors and doors without a traditional latch almost always require a mag lock or a motor-operated latch bolt rather than an electric strike.
Fail-safe versus fail-secure is a non-negotiable specification point. Magnetic locks are inherently fail-safe: cut the power and the door opens. That behavior is required for most egress paths under NFPA 101 (Life Safety Code) and IBC occupancy rules. Electric strikes can be ordered in either configuration. A fail-safe electric strike releases when power is lost, mirroring the mag lock’s behavior. A fail-secure electric strike remains locked during a power failure — appropriate for server rooms or secure storage, but prohibited on required means of egress in most jurisdictions unless combined with compliant egress hardware.
Request-to-exit (REX) integration differs significantly between the two devices. Mag locks require a separate REX sensor — typically a passive infrared (PIR) motion sensor or a push-to-exit button — that cuts power to the magnet before a person can push the door open. Without proper REX, a person could be injured attempting to push against a 600-lb holding force. Electric strikes with a lever or panic bar function as their own REX: the user simply operates the handle, the latch retracts mechanically, and the door opens even if the strike is in locked state. This makes electric strike installations somewhat simpler from a code-compliance standpoint on single-swing egress doors.
Power consumption is a practical operational concern. Magnetic locks draw continuous power while locked — typically 3W to 8W per unit. In a large facility with dozens of controlled openings, that consumption adds up. Electric strikes, particularly those designed for fail-secure operation, draw power only when releasing, making them more energy-efficient in high-traffic applications. Fail-safe electric strikes consume continuous power in a manner similar to mag locks. Battery-backup panels and uninterruptible power supplies must be sized accordingly for whichever device is specified.
Costs and Risks of Each Access Control Lock Type
Hardware costs vary by brand, holding force, and feature set. A standard commercial electric strike runs between $80 and $350 for the hardware alone; heavy-duty aluminum-door strikes with internal monitoring can exceed $500. Magnetic locks are priced similarly at entry level — a 600-lb single-door mag lock retails for roughly $80 to $200 — but high-security dual-door or high-force (1,200 lb) units with door position switches and integrated timers run $250 to $600 or more.
Installation labor differs substantially. An electric strike requires frame preparation, which on existing doors may mean routing or mortising into a finished frame. Incorrect mortising that weakens the frame creates a structural security risk that negates the lock’s rated strength. Magnetic locks mount to the header with a bracket — less invasive frame work — but proper alignment of armature to magnet is critical. A gap of even 1/16 inch between armature and magnet face can reduce holding force by 30 percent or more. Both installations require low-voltage wiring, and running that wiring through fire-rated assemblies introduces additional code requirements.
Average: $200 · Range: $120–$450 · Travel: free in service area. Those figures reflect a typical single-door electric strike or mag lock installation by a licensed locksmith and include hardware at mid-range pricing; access control panel integration, credential readers, and multi-door projects are quoted separately.
Risk profiles are distinct. Mag locks present a physical-force risk if REX hardware is absent or fails — egress is blocked, which is both a safety and a liability issue. Electric strikes can fail mechanically if the keeper spring weakens, allowing the door to open without authorization. Both devices can be defeated by power interruption if backup power is not installed; a deliberate power cut is a known attack vector against fail-safe systems, which is why high-security applications pair fail-safe egress hardware with fail-secure perimeter access controls and generator or battery backup.
When to Call a Locksmith for Electric Strike or Mag Lock Work
Several situations call for a licensed locksmith rather than a general electrician or facilities staff member. Any time frame modification is required for an electric strike — routing into a steel hollow-metal frame, shimming for proper gap tolerance, or adapting an oddly dimensioned rabbet — a locksmith with door hardware experience will recognize when the modification compromises the frame’s structural integrity. Frame damage during strike installation is a common source of security failure that may not be visible after the door is painted.
Mag lock realignment is another professional task. If the door sags, the hinge pins wear, or the door closer tension shifts over time, the armature and magnet face will no longer meet flush. Attempting to correct this by shimming the bracket without understanding the door’s movement under load often results in a temporary fix that fails within weeks. A locksmith can assess door hardware holistically — closer, hinges, frame — and address the root cause rather than the symptom.
Access control integration is where many DIY installs go wrong. Connecting a mag lock or electric strike to a controller, a credential reader, a REX sensor, and a door position switch involves low-voltage wiring that must be routed correctly through door frames, often through a door loop or a grommet on a frame-mounted installation. Incorrect wiring — particularly miswiring the lock’s power output or creating ground loops — can damage the controller, intermittently release the lock, or prevent the door position switch from reporting accurately to the access control software. A locksmith experienced in integrated systems traces the full circuit rather than just replacing the strike or magnet.
Emergency situations also warrant an immediate call. If a mag lock fails to release and an occupant is locked inside, or if an electric strike’s keeper jams in the locked position and legitimate users cannot enter, the response time of a 24/7 mobile locksmith matters. Attempting to force either device without understanding its retention mechanism can damage the door, the frame, or the controller. Low Rate Locksmith’s technicians carry common electric strike and mag lock replacement units and can diagnose controller-level failures on site.
Recommended Next Steps for Selecting and Installing Access Control Hardware
Start with a door survey before specifying hardware. Document door material, frame material, door width and height, existing hardware prep, hinge count and condition, and whether the door is on a required means of egress. That information determines which devices are physically compatible and which are code-compliant for the opening. Skipping the survey and specifying hardware from a catalog description is a common source of expensive change orders.
Verify local authority having jurisdiction (AHJ) requirements before purchasing. Fire marshals and building inspectors in some jurisdictions have interpretations of NFPA 101 or local amendments that affect which lock configurations are permitted on which door types. An electric strike on a stairwell door in a high-rise, for example, may face requirements that differ from the same device installed on an interior office door. A locksmith who works regularly in your municipality will know the local enforcement posture.
Specify the full system, not just the lock. The electric strike or mag lock is one component in a chain that includes the power supply, the access control panel, the credential reader (card, PIN, biometric, or mobile), the REX sensor, and the door position switch. Each component has voltage and current requirements; the power supply must be sized to support all loads simultaneously, including inrush current during strike or magnet energization. A detailed bill of materials with wiring diagrams prevents site surprises.
Plan for maintenance at installation time. Both electric strikes and magnetic locks require periodic inspection. Strikes accumulate wear on the keeper pivot and spring; that wear is easy to observe during a quarterly hardware check but invisible until the keeper fails to release cleanly. Mag lock armature plates accumulate surface oxidation that reduces holding force; cleaning with a dry cloth and checking the air gap with a feeler gauge takes minutes and prevents a holding-force failure. Ask the installing locksmith to document the baseline air gap measurement and the initial holding-force test result so future inspections have a reference point.
If the project involves more than one door, a phased installation allows the first opening to serve as a calibration point. The installer learns the site’s specific frame tolerances, wiring routing constraints, and controller configuration before committing to the same approach on every subsequent door. That operational knowledge reduces rework and confirms that the chosen device type — electric strike or magnetic lock — performs as expected in the actual environment rather than under catalog conditions.
Related from Low Rate Locksmith: Common Problems With Electric Strike vs Magnetic Lock, Patio Door Lock Jammed, Best Practices for Electric Strike vs Magnetic Lock.
Call Low Rate Locksmith
For electric strike installation, magnetic lock alignment, access control wiring, or emergency lock release, Low Rate Locksmith provides 24/7 mobile service across the US and Canada. Technicians arrive with diagnostic tools and common replacement hardware to resolve both planned projects and urgent failures without delay. Call (833) 439-8636 to speak with a technician, request a site assessment, or get a project quote. Travel is free within the service area.