A Network Extender is a device that boosts the range and strength of a wireless network. It receives the existing Wi-Fi signal from a router and amplifies it, allowing users to access the internet in areas where the signal is weak or nonexistent. This is particularly useful in larger homes or buildings where the original signal may not reach every corner. By using a Network Extender, users can improve their internet experience without needing to install additional wiring or equipment. It is compatible with most routers and can support multiple devices, making it a convenient solution for enhancing connectivity in various environments.