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Wi-Fi module is an embedded hardware unit that integrates Wireless Local Area Network (WLAN) communication capabilities, enabling smart terminal devices to connect wirelessly based on the IEEE 802.11 standard. It is widely used in applications such as body cameras, in-vehicle systems, industrial terminals, wearable devices, and smart gateways, playing a key role in data uploading, remote access, video preview, and wireless transmission.

The Wi-Fi module integrates key components such as the wireless communication protocol stack, RF circuitry, antenna interfaces, and control firmware, and communicates with the host system via standardized hardware interfaces. Depending on device-specific requirements, Wi-Fi modules vary significantly in terms of performance, form factor, interface types, and functional capabilities.

Typical components and functional elements of a Wi-Fi module include: