MAGNETIC TAMPER RESISTANCE: MAGNASPHERE’S technology utilizes the principle of spherical magnetism. The spherical shape is not polarity sensitive and will be attracted to either pole of the actuating magnet. Unlike a reed switch that responds to a magnet within a global activation zone, the MAGNASPHERE switch responds to a magnet only within a restricted zone. A stronger magnet outside the zone pulls the ball off the center electrode to open the switch. NEXT >> HIGH VOLTAGE AND EMI RESISTANCE