This monitor works very well, has great clarity and a very long range. It works very well and we like it quite a lot. However, it beeps really annoyingly when ... well, we really had to do some detective work to find out why and to fix it, as this doesn't seem to be documented anywhere. We had a Sony cordless phone and we found out that if that uses certain channels, it interferes with the baby monitor and causes this really annoying noise. I am still not sure if this is supposed to be an out of range noise or an acoustic feedback, but it suddenly went away after we changed channels of our cordless...review »