Resideo Technologies Inc (Resideo) is a manufacturer, developer, and distributor of technology-driven sensing and controls products and solutions. The company serves residential and commercial markets, focusing on comfort, security, energy management, and smart living. Resideo's products are present in over 150 million spaces globally, with tens of millions of new devices sold annually. The company operates primarily in the home heating, ventilation, and air conditioning controls; smoke and carbon monoxide detection; home safety and fire suppression; and security industries.

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Resideo focuses on the development of new products and solutions, as well as enhancements and improvements to existing products that substantially change the product. The company's research and development activities are primarily related to employee compensation and consulting fees, which are expensed as incurred. The company aims to protect its products and technology by asserting its intellectual property rights against third-party infringers. Resideo has major product design centers in the US, Europe, Asia, and Latin America, and software centers of excellence in Bengaluru, India; Belgrade, Serbia; and Melville, New York. These units are responsible for managing the company's R&D activities, including product design and software development. Resideo owns approximately 2,900 worldwide active patents and pending patent applications to protect its R&D investments in new products and services. The company has a significant trademark license with Honeywell in connection with the use of the Honeywell Home trademark and certain intellectual property licensed by Honeywell. In FY2025, Resideo incurred expenses of US$167 million on R&D, which as a percentage of revenue stood at 2.2%.