We just got this as a gift and tried it out last night. It worked great right outside the boys' room, but when we came downstairs it said no signal and wouldn't work?! I read through the instructions and it said wi-fi can interfere, so we disconnected that to see if it was the problem, but it still didn't work. Same thing with our cordless phones. A monitor that costs that much should work on the other side of the neighborhood in my opinion! Has anyone else had a similar experience and found a way to fix it? I'm wondering if we maybe just got a lemon and might exchange it.