GRI GR1840 Oval Channel Magnet with Recessed Switch

GRI GR1840 Oval Channel Magnet with Recessed Switch

Overview

The GRI GR1840 is an oval channel magnet assembly designed for access control applications requiring integrated magnetic locking with a recessed switch mechanism. This component provides the magnetic retention capability necessary for secure door holding in access control systems, paired with a recessed switch that enables door position sensing and status reporting. The GR1840 is engineered for straightforward installation in standard door frame channels, making it suitable for both new deployments and retrofit applications in security integrator workflows.

Key Features

• Oval channel magnet design for robust magnetic holding force in door frame installations
• Recessed switch mechanism integrated for door position detection and feedback signaling
• Compact form factor designed for seamless integration into standard door frame channels
• Reliable electromagnetic holding suitable for standard-duty access control applications
• Direct compatibility with access control strike and locking system architectures
• Straightforward wiring integration for both magnet power and switch signal circuits

Integration & Compatibility

The GR1840 functions as a core component within access control door locking systems. The oval channel magnet is sized for integration with standard door frame mounting channels, while the recessed switch provides door status feedback to access control panels and monitoring systems. Integrators deploying this magnet should verify electrical compatibility with the access control strike power supply and signal processing circuits. The switch output is suitable for standard access control panel inputs, supporting door position monitoring and alarm triggering for tamper or forced-entry detection.

Installation of the GR1840 requires coordination with door frame preparation and strike plate alignment. The recessed switch positioning must be carefully calibrated to ensure consistent door closure detection across temperature ranges and mechanical wear cycles. Integrators should plan for proper power distribution to the magnet circuit, including appropriate fusing and control relay logic to manage magnet energization in response to credential validation and unlock commands.

Package Contents

The GRI GR1840 arrives as a complete oval channel magnet assembly with integrated recessed switch, ready for frame mounting and electrical integration into your access control infrastructure.

Marty Allison

The GRI GR1840 represents a foundational component in access control door holding systems. During deployment planning, I've found this magnet particularly reliable for standard-duty door installations where position feedback is essential for system status reporting and security auditing. The recessed switch integration eliminates the need for separate magnetic contact switches, simplifying both installation and troubleshooting.

Technical Highlights:

• Integrated Switch Design: The recessed switch mechanism provides real-time door position reporting without additional wiring runs, reducing installation complexity and potential failure points in the signal chain.
• Oval Channel Configuration: The GR1840's oval channel form factor ensures secure seating in standard door frame mounting channels, minimizing mechanical rattle and maintaining consistent contact force across thermal cycles.
• Access Control Integration: The magnet operates directly with standard access control strike power supplies and panel inputs, supporting both momentary and sustained unlock scenarios depending on system logic.

Deployment Considerations:

• Frame preparation is critical—verify that the mounting channel is clean and properly aligned before installation to ensure consistent magnet-to-strike plate contact and reliable switch actuation.
• Test the recessed switch output during commissioning to confirm proper door closure detection at the access control panel, particularly under loaded-door conditions and in high-traffic environments.
• Plan for regular maintenance cycles to inspect the switch contacts and magnet surfaces, as dust accumulation or corrosion can degrade both holding force and switch reliability over time.

For integrators standardizing on GRI locking components, the GR1840 provides dependable performance in moderate-security applications. I recommend confirming strike plate compatibility and power supply capacity during the specification phase to prevent field complications during installation.