TP-Link RE355 RE355 V1 User Guide - Page 24

Relocate. Plug in the extender halfway between your wireless router/AP (Host Network) and the Wi-Fi dead zone. Wait for the extender to reconnect and the LED turns solid blue. If not, relocate it closer to the router to achieve a good (or better) signal quality. Enjoy! The extender shares the same wireless network name (SSID) and wireless password as your host network. If you want to change the wireless network name (SSID), please refer to Extender Settings. On the Extended Network page, you can enable or disable the wireless network of the extender, change and hide the wireless network name (SSID) of the extender. Launch a web browser and type in http://tplinkrepeater.net, then go to Settings->Wireless-> Extended Network webpage. Configure the settings as shown in the figure below.  Extended 2.4GHz/5GHz: Enable or disable the 2.4GHz/5GHz host network.  Extended 2.4GHz/5GHz SSID: Either copy the host SSID or create a new name using up to 32 characters. This field is case-sensitive.  Hide SSID broadcast: Select this checkbox if you want to hide the extender's SSID (of the 2.4GHz/5GHz wireless network) from the Wi-Fi network list. If you want to connect to the hiden SSID, please enter the SSID and the password manaully. Click Save to save the settings. Manage the Extended Network and Security Settings