GRI 412P-B 4" Commercial and Industrial Surface Mount Switch Set, Standard Gap up to 1/2", Open/Closed Loop Type, SPDT, 5W, Brown

Designed for dependable door monitoring in demanding commercial and industrial environments, the George Risk Industries GRI 412P-B surface-mount magnetic contact delivers robust security where it matters most. This 4" magnetic contact provides clear SPDT open/closed loop signaling and includes a built-in End-of-Line (EOL) resistor to simplify wiring and maintain circuit integrity for alarm panels and monitoring systems. The tamper-resistant construction reduces nuisance triggers and deters tampering, helping maintain continuous surveillance and reliable intrusion detection. With wired connectivity and a compact surface-mount profile, the GRI 412P-B installs quickly on doors and frames, streamlining integration into existing security, access control, and alarm setups. Compatible with a wide range of commercial security panels, this magnetic contact supports consistent, professional-grade monitoring across high-traffic entry points. Choose the George Risk Industries GRI 412P-B for durable, low-maintenance protection that keeps your facilities secure—order now to upgrade your perimeter security or add solid door sensing to your next surveillance project.

• Protects doors and assets with reliable wired monitoring for commercial and industrial security systems
• Tamper-resistant housing minimizes false alarms and prevents unauthorized tampering
• Built-in End-of-Line (EOL) resistor simplifies panel integration and improves circuit integrity
• SPDT open/closed-loop operation gives flexible compatibility with most alarm panels and access control systems
• Compact 4" surface-mount design fits standard door and frame installations for quick, professional setup