Nascom N205AU/STSD Standard Overhead Door SPDT Set with Universal Magnet, Single Pole, Double Throw, Silver

Designed for reliable security and access control of commercial overhead doors, the Nascom N205AU/STSD magnetic contact delivers consistent monitoring where standard switches fail. As a purpose-built overhead door switch, the N205AU uses No Dead Spot technology and an N35 NdFeB rare-earth magnet to eliminate false alarms caused by side-to-side door movement, improving system uptime and reducing unnecessary service calls. The unit accommodates an extra-wide 3" standard gap and includes 36" 22AWG wire leads with 24" armored cable protection to simplify durable, code-conscious installations with alarm panels, access control and building management systems. Constructed from extruded anodized aluminum and listed to UL634, this SPDT closed-loop magnetic contact supports 30V DC operation and up to 500mA input current—making it ideal for commercial and industrial environments where robust performance and reliability matter. Specify the Nascom N205AU for your next security, surveillance, or monitoring project to ensure dependable overhead door detection and reduced false alarms. Order today or contact your distributor to include this switch in your next installation.

• Prevents false alarms with No Dead Spot technology for dependable monitoring of overhead doors
• Extra-wide 3" gap tolerance handles misalignment and side-to-side door movement for less maintenance
• Rugged extruded anodized aluminum housing and N35 NdFeB magnet deliver long-term durability in industrial environments
• Armored cable protection and 36" wire leads simplify secure, code-compliant wiring for access control and alarm panels
• Universal mount and SPDT closed-loop configuration provide flexible installation and seamless integration with security systems