Nascom N505ASCD/STDD Overhead Door Rail Mount DPDT Switch for Curtain Doors Featuring No Dead Spot Technology, Silver

Designed for dependable perimeter protection, the Nascom N505ASCD/STDD magnetic contact secures overhead rollup and curtain doors without the nuisance of false alarms. This DPDT switch combines installer flexibility with No Dead Spot technology, so warped or shifting doors won’t trigger unwanted events—ideal for retail, warehouse, and industrial security systems. Built around an extra-wide N35 NdFeB rare-earth magnet and an extruded anodized aluminum housing, the compact 2" block provides maximum gap performance and rugged corrosion resistance in silver finish.

Installers benefit from a 24" armored cable lead and 36" 22AWG wire leads for robust, code-friendly wiring along overhead rails. The unit is UL634 listed and rated for common security voltages and currents, making it a reliable choice for access control, alarm monitoring, and surveillance integrations. Compact, versatile, and built for heavy-duty use, the Nascom magnetic contact simplifies installs while improving system accuracy. Specify the N505ASCD for your next intrusion detection or monitoring project to reduce false alarms and maintenance calls.

• Prevents false alarms with No Dead Spot technology for reliable intrusion detection on curtain and rollup doors
• Dual-pole DPDT configuration gives installers flexible contact options to match diverse security and monitoring circuits
• Extra-wide N35 NdFeB rare-earth magnet and extruded aluminum housing deliver consistent performance and long-term durability
• 24" armored cable and 36" 22AWG leads protect wiring in high-traffic overhead rail environments for easier, safer installs
• UL634 listed and built for commercial security applications, reducing service calls and system downtime