GRI 4110 Commercial Overhead Door Switch, Closed Loop, 18" Jacketed Cable

Secure overhead and roll-up doors with the George Risk Industries GRI 4110 magnetic contact switch — designed to enforce latch-based protection so your alarm system only arms when the bolt or latch is properly engaged. This closed-loop vane (shunt) switch removes the shunting effect when a latch is opened or tampered with, immediately triggering an alarm and improving overall loss prevention and monitoring for storage units, commercial doors, and similar applications. Built in a low-profile extruded aluminum housing, the GRI 4110 provides a discreet, durable mounting footprint and ships with all necessary hardware for quick installation. The 18in jacketed cable offers reliable wiring and clean routing to security panels and surveillance systems, while the Form B closed-loop contact ensures dependable signaling to your alarm or access control system. Ideal for security integrators and facility managers who need robust door monitoring, the GRI 4110 combines practical tamper detection with straightforward installation. Add the GRI 4110 to your security toolkit to improve door monitoring and reduce false arming—order now or contact us for system integration assistance.

• Prevents system arming unless the latch/bolt is fully engaged, reducing false alarms and securing storage units
• Closed-loop vane shunt detects latch removal or tampering instantly for reliable alarm and monitoring integration
• Low-profile extruded aluminum housing with included mounting hardware for a durable, professional installation
• 18in jacketed cable for easy routing and dependable connections to standard security panels
• Cost-effective design with a lifetime limited warranty to lower long-term maintenance and replacement risk