This was my aim - to create (extend) our WiFi signal beyond the main WiFi reach of our home/ indoor hub.
The BT home hub has an extension cable (Cat5) running from it to outside, into an outhouse, and plugged directly into a PS3. The home WiFi signal travelling into the outhouse was close to non-existent, so getting any reception on a tablet/mobile out there was terrible - it relied on mobile phone network coverage, which was equally poor. So I needed something to plug into the ethernet cable out there that would transmit a WiFi signal.
This unit is great! Literally plug it in and wait - it does it's own setup....flashing lights.....then solid green lights and that's it. On your device go into the WiFi setup, select the TPLink unit, enter the password on the new unit and that's it! Your device will switch between the two signals when it loses range of one.
The instructions mentions about security settings - connecting from your device to the unit and going through it all - I did that, but you don't need to do it - it's secure anyway as you need the password.
CCL delivery was next day (even during overstretched delivery services due to Covod-19 panic buying!). I did call CCL to double check prior to buying - great customer service too!