Alarmtech MC 440-BL Surface Mounted Magnetic Contact, NC

The Alarmtech MC 440-BL is a high-quality surface-mounted magnetic contact engineered for professional security and alarm systems. This device serves as a reliable component for perimeter protection, specifically designed to monitor the status of doors, windows, and other entry points. Its robust construction ensures consistent performance in both residential and commercial environments, providing a dependable solution for intrusion detection needs.

Advantages

The primary advantage of the MC 440-BL lies in its compact and versatile design, which facilitates straightforward installation on a wide variety of surfaces including wood, metal, and plastic. The normally closed (NC) configuration ensures that the circuit remains secure, triggering an alarm state immediately upon the separation of the magnet and the contact. Its durable housing is built to withstand environmental stresses, ensuring long-term operational stability and minimal maintenance requirements for your security infrastructure.

Suitable for

• Residential door and window monitoring
• Commercial building perimeter security
• Integration into wired alarm control panels
• Access control systems for restricted areas

When it may not be suitable

This magnetic contact is designed for indoor use and may not be suitable for extreme outdoor environments where direct exposure to heavy rain, snow, or high humidity could compromise the internal components. Additionally, it is not intended for use in high-security applications requiring specialized anti-masking or high-grade sabotage protection.

Key specifications

• Contact type: Normally Closed (NC)
• Mounting style: Surface mounted
• Application: Indoor perimeter protection
• Compatibility: Standard wired alarm systems

How to use

To install the Alarmtech MC 440-BL, mount the contact part on the fixed frame of the door or window and the magnet part on the moving section, ensuring they are aligned within the recommended operating distance. Connect the wires to your alarm control panel's zone input. Once installed, test the system by opening the door or window to verify that the control panel registers the state change correctly.

What to consider before purchase

• Verify the compatibility of the NC contact with your existing alarm control panel
• Ensure the mounting surface is flat and clean for secure installation
• Check the required gap distance for your specific door or window frame

Usage recommendations

Regularly test the magnetic contact during routine alarm system maintenance to ensure the magnet and sensor remain properly aligned and that the circuit triggers correctly when the protected opening is accessed.