The primary use of Internet of Things (IoT) devices in homes is to enhance automation and improve convenience for users. Smart home devices, such as smart thermostats, lighting systems, and security cameras, can be controlled remotely via smartphones or voice-activated virtual assistants. IoT devices collect data and allow for personalized adjustments based on user preferences, contributing to energy efficiency and security. The interconnected nature of IoT devices enables them to work together seamlessly, creating a cohesive home environment that enhances quality of life through improved functionality and ease of use.