GRI 505-B 1" Super Miniature Surface Mount Brad Switch Set, Standard Gap 1/2" +, Closed Loop, Reed Form, 10W, Brown

Designed for tight spaces and reliable perimeter protection, the George Risk Industries 505-B Super Miniature Surface Mount Brad Switch Set is a practical choice for residential and light commercial security. This low-profile magnetic contact sensor delivers consistent door and window monitoring with plated reed contacts that resist sticking and freezing—reducing nuisance alarms and service calls. At just one inch wide and with a 0.5" standard gap, the 505-B fits where larger sensors won’t, enabling discreet installation for surveillance, alarm and access control systems. The closed-loop (Form A) reed design supports straightforward integration with alarm panels and wired monitoring setups, and the included brads plus die-cut double-sided tape speed up installation on most frame materials. Rated for 10W operation and available with longer leads on request, the brown finish blends into wood frames and trim. Backed by a lifetime warranty and made in the USA, the GRI 505-B is built for dependable, low-maintenance perimeter security. Ideal for retrofit projects and new installations—order the 505-B to streamline your next security or surveillance deployment.

• Ultra-compact 1-inch surface-mount design for discreet door and window protection in tight spaces
• Plated reed contacts resist sticking and freezing to ensure consistent monitoring and fewer false alarms
• Quick installation with included brads and die-cut double-sided tape; longer leads available for flexible wiring
• Closed-loop, Form A (N.O.) reed switch with a 0.5" standard gap for reliable integration with alarm panels and monitoring systems
• Durable, made in the USA with a lifetime warranty to reduce maintenance and lifecycle costs