How to Install Magnetic Door Locks: A Beginner’s Guide
Magnetic door locks, also known as maglocks, are one of the most reliable and versatile access control solutions on the market. They use powerful electromagnets to secure doors without mechanical parts, making them ideal for commercial buildings, offices, warehouses, and high-security facilities.
If you’re considering adding maglocks to your property, this step-by-step guide will walk you through the basics of installation, wiring, and setup.

🔹 Why Choose a Magnetic Door Lock?
Before we dive into installation, it’s worth understanding why maglocks are so popular:
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Strong holding force – typically ranging from 300kg to over 500kg.
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Fail-safe design – unlocks automatically in case of power outage (ideal for emergency exit compliance).
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Low maintenance – fewer moving parts than traditional locks.
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Versatile mounting – works on inward and outward opening doors, glass doors, and metal frames.
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Seamless integration – pairs with access control systems, keypads, card readers, and exit buttons.
🔹 Tools & Materials You’ll Need
To install a magnetic door lock, you’ll need:
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The maglock kit (electromagnet, armature plate, mounting bracket if required)
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Drill and screwdriver set
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Mounting hardware (bolts, screws, brackets)
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Power supply (usually 12V or 24V DC, depending on the model)
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Access control device (keypad, proximity reader, or card system)
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Exit button or request-to-exit sensor
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Multimeter for testing
🔹 Step 1: Plan Your Installation
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Choose the door type – is it wooden, metal, or glass? Each may require a specific bracket.
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Check swing direction – inward vs. outward opening doors affect bracket choice (L-bracket, Z-bracket, U-bracket).
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Decide lock position – typically, the maglock is mounted on the door frame head, and the armature plate on the door.
👉 Tip: Always confirm that your lock’s holding force is suited for the door’s weight and usage frequency.
🔹 Step 2: Mount the Electromagnet
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Mark the maglock position on the door frame header.
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Drill pilot holes and secure the electromagnet using screws or bolts provided.
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Ensure the magnet surface is perfectly level and flush with the frame.
🔹 Step 3: Attach the Armature Plate
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Mark and drill the holes on the door surface where the plate will sit.
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Install the armature plate with the supplied through-bolt and rubber washer.
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Leave slight flexibility in the plate so it can self-align with the magnet when the door closes.
🔹 Step 4: Wire the Lock
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Connect the lock to a 12V or 24V DC regulated power supply (check your lock specs).
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Run the wiring from the power supply to the maglock and access control device.
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For advanced setups, integrate with:
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Keypads/card readers for entry.
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Exit buttons/sensors for egress.
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Fire alarm systems to automatically release during emergencies.
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👉 Tip: Use shielded cable to avoid interference in high-security applications.

🔹 Step 5: Test the Lock
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Power on the system and close the door.
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The magnet should engage firmly with the plate, holding the door securely.
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Test the release with your keypad, card, or exit button.
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Use a multimeter to check voltage at the maglock terminals if the system isn’t engaging properly.
🔹 Troubleshooting Common Issues
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Door not locking properly?
– Check alignment between magnet and armature plate. -
Weak holding force?
– Ensure proper voltage supply (12V/24V as required). -
Lock not releasing?
– Inspect the wiring to the exit button or controller. -
Intermittent locking?
– Test power supply capacity—an underpowered supply will cause faults.
🔹 Compliance & Safety Tips
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In Australia, magnetic locks must comply with building codes and fire safety standards.
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Ensure that maglocks on exit doors are linked to a fail-safe release mechanism (exit button, break glass, or fire panel integration).
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Professional installation is strongly recommended for commercial environments.
🔹 Final Thoughts
Magnetic door locks are an excellent choice for enhancing security in commercial and residential settings. With proper installation and integration, they offer long-term reliability, easy operation, and peace of mind.
Whether you’re securing an office, warehouse, or apartment building, CTC Communications can supply the right maglock for your needs—and provide expert Sydney-wide installation.
📌 Related Resources
What is a magnetic door lock and how does it work?
A maglock uses an electromagnet on the frame and an armature plate on the door. When powered (12/24V DC), magnetic force holds the door shut—often 300–500kg+ of holding force—until power is removed.
Why choose a maglock over a traditional lock?
No moving latches = low maintenance, strong holding force, fail-safe release on power loss (fire compliance), and easy integration with keypads, card readers and exit buttons.
What tools do I need to install a maglock?
Maglock kit, brackets (L/Z/U as required), drill/screwdrivers, fixings, 12/24V DC regulated power supply, access device (keypad/reader), exit button/RTE sensor, and a multimeter.
How do I wire a magnetic door lock safely?
Use a regulated 12/24V DC supply sized for total load. Wire PSU → controller/reader → maglock. Include RTE/exit and fire panel release. Use shielded cable for noisy environments.
The door isn’t locking—what should I check first?
Alignment (magnet flush and square), correct voltage at terminals, armature plate free-float with rubber washer, and adequate PSU capacity.
Are maglocks compliant in Australia for exit doors?
Yes—when installed with a fail-safe release: illuminated exit button, break glass call point and/or fire panel integration to drop power during emergencies.
Can maglocks be fitted to glass or outward-opening doors?
Yes—with the correct brackets: L for frame, Z for outward swing, U for glass without drilling the pane. Choose brackets to match door type and swing.
Do I need a professional installer?
For commercial sites or fire-linked doors: yes. Licensed techs ensure correct wiring, bracket selection, alignment, and code compliance.
🔒 Safety & Compliance: Exit doors with maglocks must have a fail-safe release (exit button/break glass) and, where required, fire panel integration. When in doubt, book a licensed installer.
Pre-Install
- Confirm door swing & bracket (L/Z/U)
- Verify holding force suits the door
- Plan PSU size (total load + 30%)
- Map cable path & RTE/fire release
Mount & Align
- Magnet level and flush on frame
- Armature plate free-float with washer
- Full face contact when closed
Wire & Test
- 12/24V DC at terminals (multimeter)
- RTE/exit and fire release verified
- Controller logic opens on command