The P2 High Security Switch (HSS) combined with Magnasphere technology meets the UL 634 Level 2-High Security Standard. The P2 HSS meets standards for use with SCIF and all other High Security Applications. The P2 HSS is resistant to external and internal magnetic defeat. In addition, the switch resists permanent contact welding due to lightning, power surges, or stun guns.The construction of the HSS devices incorporates robust, hermetically sealed Magnasphere switch technology as well as complete epoxy encapsulation of all electrical components and magnetic actuation.This allows the HSS models to conform to the requirements of UL 913 and be used as an intrinsically safe simple apparatus device in hazardous locations. The P2 HSS devices must be used in conjunction with an intrinsically safe barrier.