Wi-Fi modules are devices that provide a wireless connection to a local area network (LAN) using the Wi-Fi (IEEE 802.11) standard. They are commonly used in a variety of applications, including smartphones, laptops, and internet of things (IoT) devices. Wi-Fi modules typically consist of a radio transceiver, an antenna, and a microcontroller or other control circuitry. They may be stand-alone modules or may be integrated into larger systems, such as embedded computers or IoT gateways. Wi-Fi modules may support different Wi-Fi standards, such as 802.11b/g/n, and may have features such as support for multiple networks, security protocols, or power management.