Tyco Fire & Security takes a global approach to minimizing risk. A subsidiary of Tyco International, the company designs, sells, installs, and monitors electronic security systems and services to more than 7 million residential, commercial, industrial, and government customers worldwide. It operates in North America and has a presence in Africa, Asia, Australia, Europe, and South America. The company's security systems are primarily marketed under the ADT and Sensormatic brands and are designed to detect intrusion as well as react to hazards such as fire, smoke, flooding, and other environmental conditions.