The Magnasphere® switch represents the first improvement in two-wire magnetic switch technology in over seventy years. Exhibiting anti-tamper and anti-weld characteristics in a compact, robust package this SUPERIOR switch technology is at the HEART of all we do. These features, coupled with the ability to sense magnet or FERROUS metal targets opens the door for endless potential switch and sensing applications in the industrial and commercial marketplace. In the Security / Intrusion Detection / Access Control space, Magnasphere Security Contacts are the recognized leader for use in High Security Government, Commercial and Residential installations.