A dual band extender is a wireless network device that extends the range and coverage of an existing Wi-Fi network by using two frequency bands, 2.4 GHz and 5 GHz. It receives the wireless signal from the main router and rebroadcasts it, increasing the coverage area and improving the signal strength. The 2.4 GHz band provides better coverage over longer distances, while the 5 GHz band offers faster speeds over shorter distances.
