What This Product Does TP-LINK’s TL-WPA4220T KIT extends your Internet connection to every room of the house through your home’s existing electrical circuitry. The TL-WPA4220 features a Wi-Fi Clone Button enabling Super Range Extension, which means it can automatically copy the SSID and Password of your router. In this way, TL-WPA4220T KIT simplifies your Wi-Fi configuration and allows for seamless roaming within your home network. One Touch Super Range Extension With a Wi-Fi Clone Button enabling Super Range Extension, the TL-WPA4220 can automatically copy the wireless network name (SSID) and Password of your router at the push of a button. After pressing the button, you can place the powerline adapter anywhere you want wired or wireless access and enjoy seamless networking across your entire home or office.