Potter AMS-21-W AMS-21 Series 3/8" Recessed Magnetic Contact, White (4350144)

Protect perimeter openings with a discreet, code-compliant sensor built for professional security installations. The Potter Electric Signal AMS-21 Series recessed magnetic contact (AMS21W) provides concealed monitoring for doors, sliding panels and windows where aesthetics and tamper resistance matter. Its shallow 3/8" recessed housing keeps the device out of sight while the Alnico 5 magnet and 5/8" operating gap ensure dependable, repeatable signaling to alarm panels and access control systems. UL-listed construction gives installers confidence in performance and compliance, and the normally-open (N.O.) wired contact supports straightforward integration with existing intrusion, surveillance and building monitoring setups. The white finish blends into most frames, making it ideal for retail, education, healthcare and commercial properties that require unobtrusive perimeter protection. Choose the AMS-21W when you need a reliable, low-profile magnetic contact engineered for long-term service and simple installation—perfect for security, surveillance and access control projects. Order today for professional-grade recessed sensing in your next installation.

• Concealed protection: recessed 3/8" housing keeps the sensor hidden for a clean, tamper-resistant installation on doors and windows.
• Reliable monitoring: Alnico 5 magnet and a 5/8" operating gap deliver consistent contact performance for security and access control systems.
• Code-ready and trusted: UL-listed component helps meet regulatory requirements and simplifies system approval for commercial projects.
• Flexible integration: N.O. wired contact and hybrid installation options work seamlessly with alarm panels, surveillance, and building monitoring systems.
• Minimal visual impact: white finish blends with frames and trim for discreet perimeter protection in corporate, retail, and institutional environments.