Nascom N205AU/ST Overhead Door Standard Switch with Universal Magnet Featuring No Dead Spot Technology, Silver

Keep commercial and industrial overhead doors monitored reliably with the Nascom N205AU/ST magnetic contact. Engineered for security professionals, this overhead door switch combines wide-gap performance and a universal mount to prevent false alarms caused by side-to-side door movement. The closed-loop N205AU/ST uses No Dead Spot technology and an N35 NdFeB rare-earth magnet to maintain consistent contact across gaps up to 3.5in, delivering dependable perimeter security for warehouses, loading bays, and service doors. Robust installation features — including a 24in armored cable protector and 36in 22 AWG wire leads — protect terminations from mechanical damage and ensure long-term wired connectivity for monitoring and integration with alarm and access control systems. The extruded anodized aluminum housing and industry-standard mounting holes simplify installation and lower lifecycle costs. Ideal for surveillance, security monitoring, and access control applications where uptime and nuisance alarm reduction are critical. Specify the Nascom N205AU/ST magnetic contact for secure, maintenance-friendly door monitoring—order now or contact us for a site quote.

• Eliminates nuisance alarms with No Dead Spot technology for reliable closed-loop monitoring of commercial overhead doors
• Wide-gap design and N35 rare-earth magnet maintain detection performance across large door offsets (standard gap up to 3.5in)
• Durable 24in armored cable protection and 36in 22 AWG wire leads safeguard connections in industrial environments
• Extruded anodized aluminum housing resists corrosion and mechanical wear for long service life and low maintenance
• Universal mount with industry-standard holes speeds retrofit and new installations, reducing labor time on site