A Wi-Fi 라우터 is a device that allows multiple devices to connect to the internet wirelessly. It receives data from a modem and transmits it as radio signals, enabling smartphones, laptops, and tablets to access the internet without physical cables. Most Wi-Fi 라우터 models offer various features, such as security settings to protect your network and the ability to manage connected devices. They come in different ranges and speeds, making it important to choose one that fits your home or office needs for optimal performance.