I'm completely satisfied with this monitor! One of the things I was most worried about was that since it uses the 900 mHz frequency, there would be interference with our cordless phones which also use that frequency. We have not had any interference at all. The voice activation feature works very well. We use a white noise machine in our daughter's room, yet it only turns on when she makes a sound if we have it set to "voice activation." We have no issue with going out of range, and we live on a one acre lot. I like that there is no flimsy antennae on top that can be bent and broken by my older kids--that's what happened to the FP Light N Sounds monitor I had. Really sturdy, quality product and I strongly recommend it.