How do I know what wi fi my camera is connected to on my EX6100?

I have an external security camera connected ??? through the above extender back to the main wifi router. I have 3 separate wi fi's with this = main, 2 and 5 extension numbers.

It appears the camera is dropping out or has low reception to wi fi although the extender is only about 5 meters (inside garage).

How can I tell if the camera is connected to the strongest signal, in this case the 5? Or has it connected to the main which is further away?

Appreciate any feedback to a newbie at this!

Thanks PeterH