Magnasphere HSS-L2C UL634 Level High Security Dual Alarm, Concealed Contact, Closed Loop with Closed Loop Tamper Circuit, 1" Diameter Recessed

UL-634 Level 2 listed high security door contact engineered for SCIF doors and demanding security applications. Features award-winning Magnasphere switch technology with patented removal tamper circuit that triggers dual alarms on pry attempts. Installs in standard 1-inch diameter hole or ANSI door cutout for seamless retrofit or upgrade compatibility. Closed-loop design resists permanent contact welding and delivers reliable performance in high-security environments. American-made construction built to withstand tampering and maintain integrity in critical access points.