Smart appliances communicate with each other in a smart home using Internet of Things (IoT) technology. These devices are connected to a central hub or network that enables them to exchange data and respond to commands. Wireless protocols such as Wi-Fi, Bluetooth, and Zigbee facilitate this connectivity, allowing for automation, remote control, and monitoring via smartphones or voice assistants. This seamless communication enhances convenience, enabling users to manage their home environment, improve energy efficiency, and create customized experiences.