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Magnasphere? patented technology utilizes the principal 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.