# We use Wi-Fi every day to connect our devices to the internet, but how does it actually work? How do our devices communicate with the router and what makes Wi-Fi different from other types of wireless communication?
In: Technology
*WiFi transmits data using radio waves*, **a type of electromagnetic radiation which is** much longer wavelength than visible light. Radio waves can travel forever. Wi-Fi uses radio waves to transmit information between your device and a router via frequencies. 802.11 Wireless LANs (WLANs) use radio waves having frequencies of 2.4 GHz and 5 GHz, Signals operating at these frequencies are too high for humans to hear and too low for humans to see. Thus, radio waves are not noticed by humans. RF (**radio frequency**) system enables the propagation of radio waves. A key component of a WLAN is the RF transceiver, which consists of a transmitter and a receiver. The transceiver and antenna can be integrated inside the client device or can be an external component.
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