Hello,
Yes, the repeater can extend the WiFi signal even if it's out of range of the main WiFi, as long as it's connected to your network via Ethernet (for example, via a cable from the router or a switch). This activates Ethernet bridge mode, where it receives the network via cable and broadcasts WiFi locally.
If this doesn't work, check these points:
- The Ethernet cable is properly connected to the RJ45 port (10/100 Mbit/s) on the repeater and to a LAN port on your router.
- The repeater is correctly configured: access
http://tplinkrepeater.net or 192.168.0.254 from a device connected to the repeater (via WiFi or Ethernet), and follow the steps to select the network or activate bridge mode.
- Check the LEDs: the 2.4G/5G signal lights should be green to indicate a good connection. If red or off, reposition or reconfigure.
- Test the Ethernet connection: plug a PC directly into the repeater's Ethernet port and check Internet access.
It's probably a question of configuration. If the problem persists, try a reset (RESET button) and a new installation via WPS or the web interface. For more help, consult the TP-Link manual or our community.