GRI 400 400 Series Industrial Surface Mount Switch Set, 1-1/2 "Standard Gap, 10W, 160VDC, 040A, Closed Loop, N/O, and Concealed Screw Terminals, Gray

Engineered for dependable perimeter security, the George Risk Industries GRI 400 magnetic contact delivers tamper‑resistant, industrial-grade monitoring for doors and frames. This surface-mount switch set uses a 1.5-inch standard gap to accommodate a wide range of steel door conditions while maintaining consistent detection for alarm and surveillance systems. The closed-loop, normally open (N/O) contact provides straightforward wiring for most control panels, and concealed screw terminals reduce exposure to tampering and vandalism.

Installers benefit from a compact surface-mount footprint, included spacers and mounting hardware, and the option to request built-in E.O.L. resistors or diodes for seamless alarm panel integration. With UL 10C fire rating and George Risk Industries' lifetime warranty, the GRI 400 is ideal for commercial buildings, industrial sites, and any application that demands reliable security monitoring and minimal maintenance. Choose the GRI 400 to simplify installs and strengthen perimeter protection—request a quote or order today for immediate use in your security and surveillance projects.

• Tamper‑resistant concealed terminals protect wiring and reduce vandalism risk for secure commercial and industrial installations.
• 1.5-inch standard gap ensures reliable perimeter monitoring across steel door and frame conditions, minimizing false alarms.
• Surface-mount design and included spacers/hardware speed up retrofit and new installations for security and surveillance systems.
• Closed-loop normally open (N/O) contact with optional built-in E.O.L. resistors/diodes simplifies integration with alarm panels and monitoring equipment.
• UL 10C fire rating and lifetime warranty deliver spec-grade reliability and long-term peace of mind for facility managers.