Nascom N205A/STDD Overhead Door Standard DPDT Switch with Shape Magnet, 24" Armored Cable, Silver

Built for commercial and industrial overhead door security, the Nascom N205A/STDD magnetic contact ensures dependable monitoring where door movement and heavy use can cause nuisance alarms. This overhead door switch from Nascom combines NO DEAD SPOT technology with an L‑shape AlNiCo 5 magnet to maintain reliable contact across a wide 3" gap — ideal for rolling and sectional doors that shift side-to-side. The DPDT contact provides flexible wiring options for alarm panels, access control systems, or building automation, while the 24" armored cable and extruded anodized aluminum housing protect connections in demanding environments.

Installers benefit from industry-standard mounting holes and long wire leads (36" 22AWG) that simplify retrofits and new installs. Designed and listed to UL634 standards, the N205A supports continuous security, surveillance and access control applications where uptime and false-alarm reduction matter. If you need a rugged, easy-to-integrate magnetic contact for overhead doors, the Nascom N205A/STDD delivers long-term reliability — ideal for warehouses, loading docks, and commercial facilities. Order now to strengthen your perimeter monitoring and reduce false alarms.

• Prevents false alarms from door sway with NO DEAD SPOT technology for reliable security monitoring
• Wide-gap design and AlNiCo 5 magnet deliver consistent contact across a 3" standard gap for overhead doors
• DPDT contact configuration provides flexible wiring for integration with access control and alarm systems
• 24" armored cable and anodized aluminum housing protect wiring and components in commercial/industrial environments
• Industry-standard mounting holes and 36" 22AWG wire leads speed installation and reduce downtime