Nascom N400G/ST018 Industrial Bar Closed Loop Switch / Magnet Set, Jacketed Wire Leads, Gray

Protect perimeter openings and reduce nuisance alarms with the Nascom N400G/ST018 industrial bar closed-loop switch and magnet set. Designed for commercial security and access control, this magnetic contact combines a powerful extra-wide N35 NdFeB rare-earth magnet with encapsulated hermetically sealed contacts to maintain reliable monitoring even when doors shift or warp. The N400G features an 18" jacketed center wire lead for tidy installations and easy connection to control panels, and the ABS housing plus included steel-door spacer simplify mounting on both wood and metal frames. Rated for use in low-current security circuits and listed to UL634, the N400G meets the expectations of integrators specifying durable sensors for intrusion detection, surveillance interfaces, and building automation. Choose the Nascom N400G when you need a robust door contact that minimizes false alarms, speeds installation, and supports long-term security system performance. Add the N400G to your next access control or monitoring project — contact sales or order online to streamline installation.

• Reduces false alarms with an extra-wide N35 NdFeB rare-earth magnet that tolerates door warpage and shifting
• Reliable long-term operation from hermetically sealed contacts and rugged ABS housing for industrial security environments
• Simplifies installation with 18" jacketed center wire leads for neat routing and quick termination
• Includes steel-door spacer for correct mounting and consistent gap performance on metal frames
• UL634 listing ensures code-compliant use in access control, intrusion detection, and monitoring systems