Tyco International plc was a security systems company incorporated in the Republic of Ireland,[2] with operational headquarters in Princeton, New Jersey, United States (Tyco International (US) Inc.). Tyco International was composed of two major business segments: security solutions and fire protection.On January 25, 2016, Johnson Controls announced it would merge with Tyco, and all businesses of Tyco and Johnson Controls would be combined under Tyco International plc, to be renamed as Johnson Controls International plc.[3] The merger was completed on September 9, 2016