Magnasphere MSS-321S Surface Mount Multi-Switch Contact with Armored Cable, Switches, Open Loop, Closed Loop

Built for reliable intrusion detection and access control, the Magnasphere MSS-321S surface-mount magnetic contact delivers tamper‑resistant door and window monitoring for commercial security and surveillance systems. This Magnasphere magnetic contact uses armored cable to protect wiring runs and resist outside defeat, minimizing downtime and maintenance. It provides three separate contact outputs so one sensor can simultaneously report to alarm panels, access control systems, and monitoring platforms. Choose closed or open loop configurations (N.C./N.O./open loop supported) to match panel requirements. The solid‑state Magnasphere switch technology is not a reed switch—it's designed not to break, weld, or fuse, giving you dependable performance in high-use environments. With a compact 0.3" standard gap and UL/ULC listings, the MSS-321S is ideal for integrating into surveillance, monitoring, and security installations where reliability and compliance matter. Specify the MSS-321S for perimeter, door, and asset protection projects—contact us to add this durable magnetic contact to your next access control or intrusion detection deployment.

• Tamper‑resistant, rugged design with armored cable protects wiring and prevents outside defeat, reducing false alarms and service calls
• Three individual contact outputs let a single sensor trigger multiple systems (alarm, access control, monitoring) for streamlined installations
• Available in closed and open loop configurations (N.C./N.O./open loop) for flexible integration with intrusion detection and access control panels
• Solid‑state Magnasphere technology that doesn't break, weld, or fuse—more reliable than reed switches for long service life
• UL and ULC listed for commercial compliance and confidence in critical security deployments
• Compact surface-mount footprint and 0.3" standard gap for easy installation on doors and windows in tight spaces