Cornell N205A/STDD036 Overhead Door DRPDT Switch with Shape Magnet

Secure and monitor commercial and industrial overhead doors with the Cornell N205A/STDD036 overhead door DPDT magnetic contact, designed to reduce false alarms and simplify installation. The N205A's wide-gap, L-shape AlNiCo 5 magnet provides dependable actuation even with larger gaps common in warehouse and dock doors, while No Dead Spot technology prevents side-to-side shifting from triggering nuisance alarms. Built for installers, the unit includes 24" armored cable lead protection and 36" 22 AWG wire leads for durable, code-friendly wiring runs. The extruded anodized (Type II) aluminum housing resists corrosion in demanding environments and the switch is listed to UL634 for commercial door applications. Ideal for access control, security, surveillance and monitoring systems, this floor-mount magnetic contact offers robust performance for gates, roll-up doors and industrial entries. Specify the Cornell N205A for reliable, low-maintenance door position sensing in your next access control or warehouse security project—order today to strengthen perimeter protection.

• Prevents false alarms with No Dead Spot technology for reliable security monitoring
• Wide-gap, L-shape magnet design ensures consistent contact on commercial and industrial overhead doors
• Durable extruded anodized aluminum housing and AlNiCo 5 magnet for long-term, low-maintenance operation
• 24" armored cable and 36" 22 AWG leads simplify installation and protect wiring in harsh environments
• UL634 listing and industry-standard mounting holes for fast integration into access control and surveillance systems
• Closed-loop DPDT configuration supports dependable alarm and monitoring circuits