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

Designed for dependable perimeter protection, the George Risk Industries GRI 29B-B surface mount magnetic contact delivers consistent, low-maintenance security for commercial and light industrial doors and windows. This N.C. (normally closed) magnetic reed switch is hermetically sealed and built to resist sticking or freezing, reducing nuisance alarms and downtime for your surveillance and monitoring systems. The 29 Series offers a standard 1" gap (with proven performance on steel surfaces), side-mounted screw terminals for straightforward wiring, and an open-loop configuration that easily integrates with alarm panels, access control and central monitoring stations. Compact brown housing and included spacers and screws simplify retrofit and new installations, while plated contacts and a lifetime warranty provide long service life and confidence in high-traffic environments. Ideal for intrusion detection, access control points, and perimeter security upgrades—add the GRI 29B-B to your security specification to improve reliability and simplify maintenance. Contact sales or add to cart to secure consistent monitoring performance.

• Reliable intrusion detection: hermetically sealed N.C. reed switch minimizes false alarms and ensures consistent security monitoring.
• Easy surface-mount installation: compact brown housing and side screw terminals speed deployment on doors and frames for commercial sites.
• Robust gap tolerance: 1" standard gap (meets common steel mounting needs) for dependable contact alignment in access control setups.
• Low-maintenance durability: plated contacts resist sticking/freezing and the unit is backed by a lifetime warranty for long-term protection.
• System-ready wiring: open-loop design and wired connectivity integrate smoothly with alarm panels, surveillance systems and monitoring networks.