DC 12V/24V Concealed Electromagnetic Shear Lock | 1200KG Access Control

Asia-Teco FBD-1200LS Concealed Electromagnetic Shear Lock — 1200 KG Holding Force

Upgrade your door security with the Asia-Teco FBD-1200LS Concealed Electromagnetic Shear Lock. Designed for professional access control systems, this embedded shear lock delivers an impressive 1,200 KG holding force by combining powerful electromagnetic attraction with mechanical shear resistance — making it one of the most robust locking solutions available for commercial, institutional, and high-security environments.

Compatible with both DC 12V and DC 24V power supplies and featuring an adjustable time-delay function (0/3/6/9 seconds), this lock integrates seamlessly into a wide range of access control, fire alarm, and building security systems. Its fully embedded, concealed installation keeps the door's aesthetic clean and professional.

Made in Mainland China.

Key Features

• 1,200 KG Holding Force: Combined electromagnetic and mechanical shear force creates an exceptionally strong, tamper-resistant lock that is extremely difficult to forcibly breach.
• Dual Voltage Support (DC 12V / DC 24V): Flexible compatibility with most standard access control power supplies.
• Adjustable Time Delay (0 / 3 / 6 / 9 Seconds): Configurable locking delay for smooth, controlled door operation in high-traffic environments.
• Concealed / Embedded Installation: Lock body installs discreetly within the door frame or door leaf — no exposed hardware, preserving the door's clean appearance.
• Dual Feedback Signal Output (NC & NO): Provides dry contact feedback signals for seamless integration with building management and monitoring systems.
• No Mechanical Wear: Electromagnetic operation means no moving mechanical parts in the locking mechanism — delivering a longer service life than traditional mechanical locks.
• Fast Lock/Unlock Response: Instantly locks when powered on and releases quickly when access is authorized — ideal for high-traffic or rapid-response scenarios.
• Wide Operating Temperature Range: Rated from -40°C to +55°C, suitable for both indoor and outdoor-adjacent installations.
• Aluminium Alloy Construction: Lightweight yet durable housing for long-lasting performance.
• Fire & Emergency Integration Ready: Designed to integrate with fire alarm systems to automatically release the lock during emergencies, preventing people from being trapped.

Technical Specifications

• Model: FBD-1200LS
• Brand: Asia-Teco
• Working Voltage: DC 12V – DC 24V
• Working Current:
  • DC 12V: Starting 1.6A / Maintaining 0.22A
  • DC 24V: Starting 1.0A / Maintaining 0.13A
• Holding Force: 1,200 KG
• Material: Aluminium Alloy
• Installation Type: Embedded (Concealed)
• Adsorption Spacing: Within 4 mm
• Lock Delay Time: 0 / 3 / 6 / 9 seconds (adjustable)
• Feedback Signals: NC and NO dry contact
• Ambient Temperature: -40°C to +55°C
• Origin: Made in Mainland China

How It Works

When electrical current is supplied, the built-in electromagnet generates a powerful magnetic field, attracting the iron strike plate and driving the lock bolt into the strike hole to secure the door. The added mechanical shear force between the door and frame increases overall resistance to lateral stress. When access is granted — or power is cut — the lock releases instantly. The 0/3/6/9-second adjustable delay allows the door to close fully before the lock engages, preventing misalignment and improving reliability in daily use.

Installation & Maintenance Tips

• Professional installation is recommended to ensure precise alignment between the lock body and iron strike plate.
• Maintain a gap of 3–4 mm (minimum 2 mm) between the lock body and iron plate. Adjust the strike plate's fastening and adjustment screws as needed.
• After installation, power on and listen for confirmation. A "click" sound or failure to lock indicates the gap needs minor reduction. If the iron plate does not rebound after unlocking, slightly increase the gap.
• Connect to an access control or fire alarm control system for full automated functionality.
• A UPS (uninterruptible power supply) is recommended as a backup power source for continuous security during outages.
• Periodically inspect the electromagnet, lock body, and installation area — remove any dust or debris that could affect performance.

Ideal Applications

• Office buildings and commercial entrances
• Server rooms and data centers
• Hotels and residential complexes
• Hospitals and healthcare facilities
• Government and institutional buildings
• Any environment requiring high-security, rapid-response access control

For general guidance on access control and physical security best practices, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What is the holding force of this electromagnetic shear lock?

A: The Asia-Teco FBD-1200LS provides a maximum holding force of 1,200 KG, achieved through the combination of electromagnetic attraction and mechanical shear resistance between the door and frame.

Q: Can this shear lock work with both 12V and 24V access control systems?

A: Yes. The FBD-1200LS supports both DC 12V and DC 24V power inputs, making it compatible with most standard access control power supplies. Simply verify your system's voltage before wiring.

Q: What does the time delay function do?

A: The adjustable time delay (0, 3, 6, or 9 seconds) controls how long the lock waits after the door closes before engaging. This ensures the door is fully shut and properly aligned before the electromagnetic force activates, reducing wear and improving locking reliability.

Q: Is this lock fail-safe or fail-secure?

A: This shear lock is fail-secure (power-to-lock) — the door is locked when power is ON and unlocks when power is cut. For emergency scenarios such as fire alarms, it is designed to integrate with fire alarm systems to automatically release, allowing safe egress.

Q: Does this lock require professional installation?

A: Professional installation is strongly recommended. Proper alignment of the lock body and iron strike plate is critical to performance. The lock must also be integrated with a power supply and access control or fire alarm system for full automated operation.