Wall Socket Wifi Extender?

[happy_2008]

Has anyone used of the wall socket wifi extenders? Just wanted to know if they're worth installing?

 

[happy_2008]

I was thinking of something like this:

https://www.screwfix.com/p/british-...eNoTqOB3H0Z6Osdez8oaAoVEEALw_wcB&gclsrc=aw.ds