Magnasphere HSS-L2D UL634 Level High Security Dual Alarm, Surface Mount Contact, Closed Loop, Open Loop with Tamper Circuit, Closed Loop

Designed for the highest-security environments, the Magnasphere HSS-L2D is a Level 2 UL 634 magnetic contact engineered to protect SCIFs, safes, vaults and other critical assets. This surface-mount, dual alarm contact provides distinct breach and tamper circuits so security teams and monitoring systems can quickly differentiate events and respond appropriately. Built with armored cable options, an aluminum housing and the industry-leading Magnasphere non-reed switching technology, the HSS-L2D resists magnetic defeat and provides consistent, reliable door/window monitoring without frequent adjustments.

Installation is straightforward: built-in EOL resistor choices and wire-lead termination make panel compatibility simple and reduce commissioning time. The contact supports closed-loop and open-loop configurations and maintains a compact 0.13" standard gap for tight mounting tolerances. With low power consumption and robust tamper sensing, this device minimizes false alarms while supporting continuous surveillance and alarm system integrity. Ideal for high-security surveillance, access control and 24/7 monitoring applications—specify the HSS-L2D for hardened protection in mission-critical installations or contact our team for custom armored cable lengths and configuration assistance.

• UL 634 Level 2 certified protection that reduces tamper risk and meets stringent SCIF, safe and vault security requirements
• Dual-alarm, surface-mount design delivers separate breach and tamper monitoring for clearer event detection and faster response
• Armored cable and durable aluminum housing protect wiring and contacts in high-risk installations for long-term reliability
• Built-in EOL resistor options and wired lead termination simplify integration with existing control panels and monitoring systems
• Magnasphere non-reed switch technology resists external/internal magnetic defeat, minimizing false alarms and maintenance downtime