Deco P9 won't connect from garage to house
I have 3 x Deco P9 and I wanted to place one of these into a garage approx 50 meters from the house which is just outside wifi range from the house. I moved one of the P9 devices to the garage and it just flashed red and I could not get an internet connection. It seems the powerline functionality is not working - is this because they could be on separate circuits?
I need wifi in the garge to enable monitoring on my solar panels, so I don't need huge bandwidth. I do have a single unused ethernet cable running to the garage, but it is not terminated near my internet modem.
What options are open to me?