GRI 29B-W 29 Series Surface Mount Magnetic Reed Switch Set, 1' Standard Gap, Open Loop, N/C, B, White

Designed for dependable perimeter protection, the George Risk Industries 29B series surface-mount magnetic contact delivers reliable door and window monitoring for commercial security systems. The GRI 29B-W magnetic reed switch features an open-loop, normally-closed (N/C) contact and a 1-inch standard gap (5/8-inch on steel), providing consistent detection on steel or non-ferrous installations with minimal gap penalty. Its hermetically sealed reed and plated contacts resist sticking and freezing, lowering false alarms and maintenance overhead for integrators and facility managers.

Installation is straightforward: side-mounted screw terminals and included spacers, covers and screws speed mounting, while pre-wired and PA series cable options let you tailor connections to alarm panels and surveillance controllers. UL/ULC approvals and a lifetime warranty protect your investment and simplify compliance on access control and monitoring projects. Ideal for commercial doors, gates and asset protection, the GRI 29B-W combines durable construction with the flexibility installers need to keep security and surveillance systems reliable. Add the GRI 29B-W to your next access control or perimeter monitoring deployment for a robust, low-maintenance magnetic contact solution.

• Reliable, low-maintenance perimeter detection with a hermetically sealed reed sensor and lifetime warranty to reduce downtime and service costs.
• Fast surface-mount installation on steel or non-ferrous frames with a 1-inch standard gap (5/8" on steel) and side screw terminals for easy wiring.
• Open-loop, normally-closed (N/C) contact design ideal for commercial security, access control and monitoring systems.
• Plated contacts resist sticking or freezing and UL/ULC approvals support code-compliant deployments.
• Pre-wired options and customizable lead lengths simplify integration with alarm panels and surveillance networks.