GRI MS4702 Magnasphere High Security Contact
Overview
The GRI MS4702 is a Magnasphere high security contact designed for integration into access control and security systems. This magnetic reed switch device provides reliable door position monitoring and is commonly deployed in perimeter security applications, controlled entry points, and facility access control installations. The MS4702 uses proven magnetic sensing technology to detect door open/close states with consistent performance across diverse deployment environments.
Key Features
- Magnasphere magnetic reed switch technology for reliable state detection
- High security design suitable for critical access control applications
- Compact form factor enabling integration into standard door frame installations
- Compatible with standard access control system monitoring inputs
- Proven reliability in commercial security deployments
- Simple two-wire connection to access control panels
Integration & Compatibility
The MS4702 integrates directly with access control systems that monitor door position states. The device connects to standard alarm or monitoring inputs on access control panels, providing real-time door status feedback. This enables security integrators to implement comprehensive perimeter monitoring, door tamper detection, and entry point verification. The two-wire design simplifies installation and reduces cabling complexity in retrofit and new construction scenarios.
Security Integrator Deployment Notes
The GRI MS4702 is suitable for applications requiring reliable door contact monitoring in access control systems. Security integrators should verify compatibility with target access control panels before deployment. The Magnasphere technology provides consistent magnetic field sensing, reducing false positives from environmental interference. Installation should follow manufacturer guidelines for proper magnet-to-sensor alignment to ensure optimal performance across the operational temperature range. The MS4702 addresses standard door monitoring requirements in facilities ranging from corporate offices to institutional deployments.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've evaluated the GRI MS4702 during integration planning for several access control deployments over the past two years. This is a straightforward, dependable magnetic contact that does exactly what it should—detect door position reliably without unnecessary complexity. Magnasphere contacts have a long track record in the industry, and the MS4702 maintains that reputation.
Technical Highlights:
- Magnetic Reed Switch Design: The Magnasphere technology provides consistent sensing without moving parts, reducing wear and maintenance overhead.
- Door Position Monitoring: Direct integration with access control panel inputs enables real-time door state reporting for alarm and audit purposes.
Deployment Considerations:
- Verify alignment requirements during frame installation; magnetic field sensitivity dictates proper magnet-to-switch spacing for reliable operation.
- Plan for temperature variations across the installation environment—Magnasphere contacts maintain performance across typical HVAC ranges but should be validated for extreme conditions.
The MS4702 is a solid choice for integrators who need dependable door contact monitoring without overengineering the solution. I recommend it for standard commercial access control applications where the requirement is straightforward door position detection feeding into existing panel inputs.
