Johnson Controls, Inc. (Johnson Controls) manufactures, installs and services automatic temperature regulation systems for buildings. The Building Efficiency business is engaged in designing, producing, marketing and installing integrated heating, ventilating and air conditioning (HVAC) systems, building management systems, controls, security and mechanical equipment. The Power Solutions business is a global supplier of lead-acid automotive batteries for virtually every type of passenger car, light truck and utility vehicle. The Automotive Experience business is an automotive supplier, providing interior systems. In May 2013, Johnson Controls Inc acquired the remaining 50% interest in Tata Johnson Controls Automotive Ltd from its joint-venture partner Tata Autocomp Systems Ltd, a unit of Tata Sons Ltd. On September 27, 2013, the Company sold its HomeLink business to Gentex Corporation. Effective November 8, 2013, Johnson Controls Inc acquired a 90% interest in MAC SA.