Johnson Controls International plc is a multinational conglomerate headquartered in Cork, Ireland that produces automotive parts such as batteries and electronics and HVAC equipment for buildings. It employs 105,000 people in around 2,000 locations across six continents. As of 2019, it was listed as 389th in the Fortune Global 500; in 2020, it became ineligible for the list. Johnson Controls was founded in 1885 by Warren S. Johnson, a professor at the State Normal School in Whitewater, Wisconsin. Originally called the Johnson Electric Service Company, it focused on automatic temperature regulation. In 1974, the company changed its name to Johnson Controls.