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Assa Abloy Lockwood EMZ4-SM Mini Mag, 280kg, Single, Monitored, PTL, Surface Mount, 12/24V DC

SKU ASAEMZ4-SM
Availability:
In stock

The Lockwood EMZ4-SM Mini Mag Electromagnetic Lock is a surface-mounted, monitored 280kg magnetic lock with fail-safe (PTL) operation and dual 12/24Vdc voltage selection. Fire rated up to 4 hours and designed for timber, steel, aluminium, and glass doors, it delivers reliable commercial access control performance.

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Original price $361.02
Original price $361.02 - Original price $361.02
Original price $361.02
Current price $273.50
$273.50 - $273.50
Current price $273.50
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Lockwood EMZ4-SM Mini Mag Electromagnetic Lock

Secure commercial doors with the Lockwood EMZ4-SM Mini Mag Electromagnetic Lock, a surface-mounted, monitored solution from ASSA ABLOY’s trusted Padde Series. Designed for flexibility and durability, this single electromagnetic lock delivers up to 280kg holding force, making it ideal for high-use swing doors and access-controlled areas.

With fail-safe (PTL) operation, dual voltage 12/24Vdc selection, and integrated monitoring, the EMZ4-SM provides dependable performance for both new installations and retrofit projects.

Model: EMZ4-SM

Key Features 

  • 280kg Holding Force – Strong magnetic locking for commercial doors
  • Monitored Output – Reed switch monitoring for lock and door status
  • Fail-Safe (PTL) – Unlocks automatically when power is removed
  • Dual Voltage 12/24Vdc – Site selectable for flexible installation
  • Surface Mount Design – Ideal for retrofit and exposed applications
  • Self-Aligning Armature Plate – Pivots to accommodate door drop
  • Silent Operation – No humming or buzzing
  • Instantaneous Release – Eliminates residual magnetism
  • Fire Rated up to 4 Hours – Tested to AS1905.1.2005 standards
  • CE Approved & C-Tick Certified
  • Suitable for Timber, Aluminium, Steel & Glass Doors
  • 5 Year Tricare Warranty (Padde Series)

Ideal Applications

  • Commercial offices

  • Education facilities

  • Healthcare sites

  • Retail environments

  • Glass door installations

  • High-use swing doors

  • Access-controlled cupboards and secure areas

Why Choose the Lockwood EMZ4-SM?

  • Compact yet powerful 280kg holding force

  • Surface mount for easy installation

  • Integrated monitoring functionality

  • Fire-rated for compliant installations

  • Silent operation with smart electronics

  • Trusted ASSA ABLOY engineering

  • Backed by a 5-year Tricare warranty

The Lockwood EMZ4-SM Mini Mag is a versatile and reliable electromagnetic locking solution for commercial applications requiring monitoring, fire compliance, and clean surface-mounted installation.

Not sure which lock you need?

Tell us your door construction, swing direction, indoor/outdoor exposure, and if you need monitoring. We’ll recommend the best fit and brackets.

Read Full Beginner's Guide to Magnetic Door Lock Installation
Perfect for DIYers and professionals — includes tools, wiring, and pro tips!

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    Frequently Asked Questions Magnetic Door Locks

    Magnetic door locks work by using a magnet to hold the door closed. The magnet is typically located on the door frame, and the metal armature is located on the door. When the door is closed, the magnet and armature come together and create a strong magnetic force that holds the door in place.

    • Monitored magnetic door locks are connected to a central security system. This allows the system to monitor the status of the door and to generate an alarm if the door is opened without authorization.
    • Monitored magnetic door locks are more secure than non-monitored door locks, but they are also more expensive.
    • Non-monitored magnetic door locks are not connected to a central security system. This means that they cannot generate an alarm if the door is opened without authorization.
    • Non-monitored magnetic door locks are less secure than monitored door locks, but they are also less expensive.
    • Magnetic door locks are used in a variety of commercial and industrial settings, including:
    • Office buildings
    • Schools
    • Hospitals
    • Hotels
    • Retail stores
    • Warehouses
    • Factories

    Magnetic door locks are very difficult to pick or force open, making them a good choice for securing valuable assets. However, it is important to note that no lock is completely foolproof, and a determined thief may still be able to break into a door that is secured with a magnetic lock.

    Installing a magnetic door lock is a relatively simple process that can be completed in a few minutes. The first step is to mark the location of the magnet and armature on the door frame and door. Once the locations are marked, the magnet and armature can be attached using the included screws.

    If your magnetic door lock is not working properly, there are a few things you can check. First, make sure that the magnet and armature are properly aligned. If they are not, the lock will not be able to create a strong enough magnetic force to hold the door closed. Second, check the wiring to make sure that there are no loose or damaged connections. Finally, check the power supply to make sure that it is providing enough power to the lock.

    • Magnetic door locks are very secure. They are difficult to defeat, even by experienced burglars.
    • Magnetic door locks are very reliable. They are not subject to mechanical failure, like traditional door locks.
    • Magnetic door locks are very convenient. They can be opened with a key card, a key fob, or a password.
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