GRI 412P-W 4" Commercial and Industrial Surface Mount Switch Set, Standard Gap up to 1/2", Open/Closed Loop Type, SPDT, 5W, White

Deliver dependable, tamper-resistant door monitoring across commercial and industrial facilities. The George Risk Industries GRI 412P-W magnetic contact switch set is engineered for robust security and easy integration with access control, alarm, and surveillance systems. This 4" surface-mount magnetic contact offers SPDT switching and supports both open- and closed-loop configurations, while the built-in end-of-line (EOL) resistor simplifies circuit supervision and reduces field wiring complexity. Rated at 5W and finished in white with stainless-steel components, the 412P-W resists wear and corrosion for long service life in high-traffic installations. With a standard sensing gap up to 1/2", the hybrid installation design fits a wide range of doors, frames, and enclosures and provides consistent monitoring performance for intrusion detection and security monitoring. Specify the GRI 412P-W when you need a compact, professional-grade magnetic contact that minimizes false alarms and lowers maintenance overhead. Ideal for commercial doors, gates, and industrial enclosures—order now to upgrade your access control and surveillance systems.

• Provides reliable door and access monitoring with SPDT switching for both open- and closed-loop security circuits
• Tamper-resistant housing and built-in EOL resistor simplify installation and improve alarm integrity
• Surface-mount 4" profile and white finish deliver quick, low-profile installation on commercial/industrial doors
• Durable stainless-steel construction resists corrosion and reduces maintenance in high-use environments
• Low-power 5W design supports long-term, wired monitoring in access control and surveillance systems