Magnaspere's patented technology utilizes the principle of Spherical Magnetism. The heart of the switch is a magnetic sphere, or ball contact. This sphere is housed in a durable metal housing. Completing the switch is a seal that contains the contacting electrode, insulated from the magnetic perimeter by a time-proven ceramic-to-metal bond. The case or seal provides the second contact point required to complete the electrical circuit. The seal / electrode cap is welded to the housing in an inert atmosphere, providing a hermetically sealed contact.