The signal is very strong because I tested the signal from underground parking 3 levels down to the other end at 6 floors up and the signal is still clear as day.

Signal is strong and you can be heard clearly.

It doesn't require line of sight to work as the signal penetrates through walls and beams

And so I'm very glad I went with these since it struggled to keep a clearer signal then the

Considering the concrete, iron and steel involved in that, you have to know that the signal on these is excellent, and will work through many miles of terrain