Right, so, assuming I’m thick and the TP-Link site is no help…
We have a stone-built cottage, all the walls are, well, thick stone. Router is in the sitting room, on a windowsill which is at the back of the house, and the WiFi struggles to get from there to the front of the house due to configuration of said walls and the doors through them (which is, I assume, the only way the WiFi can get through). The room above the sitting room is fine (I assume it gets through the floor), the front bedroom is, again, iffy.
To add complication, there’s also a separate annex where we work, which is c15ft across the yard from the back of the house, but conveniently the windowsill the router is on looks directly out at it.
So, I think I need four mesh nodes, one by the router, one at the front of the house downstairs, one on the landing, and one in the annex. Does that seem right?
If so, I assume I can just buy two of these sets?
https://www.currys.co.uk/gbuk/computing-accessories/networking/whole-home-wi-fi-systems/tp-link-deco-m5-whole-home-wifi-system-twin-pack-10189878-pdt.html