Key Features & Benefits

Loud 85 dB Alarm Output

Delivers a piercing sound to instantly alert of unauthorized use of emergency exit doors.

Secure Key-Switch Operation

Enables authorized personnel to disable or enable the alarm as needed, ensuring controlled access during emergencies or service.

Auto-Reminder Audible Warning

Integrated feature activates if the key is left in the OFF position for over 5 minutes, ensuring security isn’t unintentionally compromised.

Third-Party System Compatibility

Easily integrates with fire and intrusion alarm systems via NO/NC voltage-free contacts, creating a unified security solution.

Quick & Easy Installation

Compact design suitable for retrofit applications; installable in minutes on virtually any single emergency door.

How It Works:

1- Standby Mode (Key OFF Position)

When the key-switch is turned to the "Key OFF" position, the alarm system is deactivated. In this state, authorized personnel can open the emergency exit door without triggering the alarm.

2- Armed Mode (Key ON Position)

Turning the key-switch to the "Key ON" position activates the alarm system. Now, if the emergency exit door is opened, an 85 dB audible alarm is instantly triggered to alert nearby individuals.

3- Alarm Triggered on Unauthorized Access

While in "ON" mode, any unauthorized or unexpected door opening causes the built-in siren to sound, serving as a strong deterrent against theft, intrusion, or safety violations.

Authorized Bypass with Key-Switch

If authorized staff need to use the exit door, they can disable the alarm temporarily by turning the key-switch to the "OFF" position, preventing unnecessary alerts during legitimate use.

Audible Reminder After 5 Minutes

To prevent oversight, if the key-switch remains in the "OFF" position for more than 5 minutes, a distinct reminder tone is automatically activated to prompt users to reactivate the system.

Seamless System Integration

The system can be linked with fire alarm or intrusion systems using voltage-free NO/NC output contacts, providing additional security layers in larger setups.

Technical Advantages

• Integrated Key-Switch Operation
  Unlike standard door alarms that rely on basic reset buttons, the 3MK-FCE features a dedicated key-switch control, allowing only authorized personnel to activate or deactivate the system—ensuring higher security and access control.

• Auto Reminder Function After 5 Minutes
  A unique built-in timer constantly monitors the key-switch status. If left in the "OFF" position for over 5 minutes, a distinct warning sound reminds users to reactivate the system—minimizing the risk of human error and long-term disarming.

• Dual NO/NC Output Terminals
  While most models offer limited integration, the 3MK-FCE is equipped with two jumper-selectable NO/NC relay outputs, allowing seamless integration with fire alarms, intrusion systems, or access control setups.

• Compact Yet Powerful
  Despite its slim and compact design, the device delivers a loud 85 dB alarm, ensuring it grabs immediate attention—ideal for retrofit installations where space is limited but effectiveness is critical.

• Rapid Installation & Retro-Fit Friendly
  The unit is designed for quick mounting, making it perfect for existing buildings or facilities that require enhanced exit monitoring without complex rewiring or upgrades.