I just got a Flic Hub and I have about nine buttons. No button is greater than 25 feet away from the hub with very little impediment. Several of the buttons seem to enter standby much more frequently than others and when they do, they become very slow to respond if they respond at all. I've replaced the batteries and it doesn't seem to help. All in all, the Flic system has been great when it works, but super frustrating as it works so sporadically. Personally, I have the patience to keep tweaking and trouble shooting , but when my wife gets up at 2am to feed the baby, pushes the button and the light does nothing... She's furious with ME. I got the hub specifically to make this more reliable, but in my experience, the hub hasn't really contributed much of anything.