Lockwood EMZ4-SM Single Monitored Electromagnetic Lock — 12/24 VDC, Fail-Safe
The EMZ4-SM is a single, surface-mounted monitored electromagnetic lock from the Lockwood Padde Z-Series. It is a fail-safe device (unlocks when power is removed) with dual-voltage 12/24 VDC selection, smart electronics for instantaneous release, and a self-aligning armature that pivots to accommodate door drop. Suitable for new or retrofit installations across timber, aluminium, steel and glass doors.
Warranty
- 5 Year Tricare Warranty (Padde Series)
- Lockwood 25 Year Mechanical Warranty
Key Features
- Fail-safe operation: unlocks when power is removed
- Dual voltage: site selectable 12 or 24 VDC
- Instantaneous release: smart electronics eliminate residual magnetism
- Self-alignment: armature pivots to accommodate door drop
- Silent operation: no humming or buzzing
- High holding force: see technical data (Z-Series covers approx. 200 kg to 450 kg across models)
- Easy installation: suitable for new builds and retrofit
- Monitoring options: reed switch door position; hall/bond lock status on Z4/Z8 models
Specifications
- Model: EMZ4-SM (Single, Monitored)
- Supply: 12/24 VDC site selectable
- Operating Mode: Fail-safe (power to lock)
- Monitoring: Reed switch door position; hall/bond monitoring on Z4/Z8 models
- Armature: Self-aligning, pivots to suit door drop
- Mounting: Surface mount; inswing and outswing with appropriate brackets
- Door Types: Timber, aluminium, steel, glass (with appropriate glass brackets)
Monitoring
- Hall / Bond Monitoring: Indicates the lock is powered and the armature is correctly positioned and magnetically bonded (confirms the magnet is locked).
- Reed Switch Monitoring: Integrated reed switch monitors the door position separately (confirms whether the door is open or closed).
What's In The Box
- EMZ4-SM electromagnetic lock
- Armature plate and fixing pack
- Basic mounting hardware (specialty brackets ordered separately)
Suitable Uses
- Aluminium or glass swing doors (with correct brackets)
- IT storage rooms and controlled access doors
- General access control where monitored status is required
- Surface mount for inswing and outswing doors
Dispatch & Returns
- Estimated Warehouse Dispatch: 2–4 business days when in stock (call to confirm)
Download PDF Resources
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Lockwood Electromechanical Door Solutions Catalogue |
|
Lockwood 25 Year Mechanical Warranty |
Item Code Family
Accessories (Optional)
Additional Information
The Lockwood Padde Single Series monitored electromagnetic locks cover a wide range of applications, with holding forces from approximately 200 kg up to 450 kg across the Z4 and Z8 models. These devices suit doors that must be monitored for both door position and lock status. From cupboard doors through to high-use commercial swing doors, Z-Series magnets provide a simple, robust and reliable fail-safe solution.
Installation is straightforward: the range supports timber, aluminium and steel constructions, and there are dedicated bracket options for glass door applications. The self-aligning armature pivots to accommodate door drop, reducing call-backs after settling or seasonal movement. Smart electronics ensure instantaneous release with zero residual magnetism, so the door opens cleanly on command without drag.
Specification Statement: The Single Series electromagnetic lock shall be housed in an aluminium case with heavy-duty electromagnet and operate in fail-safe mode (power to lock). The lock shall incorporate smart electronics that provide instantaneous release with zero residual magnetism. A self-aligning armature plate shall compensate for door drop. For monitored installations, reed switch door position monitoring and hall/bond monitoring of the lock status shall be available. Where life-safety or continuity of security is essential, a secondary mechanical lock or battery backup should be provided.
