This was a great purchase. Our original monitor had so much static that is sounded as if we were in a wind storm, which made it very difficult to sleep. We purchased this one as it guaranteed no static or interference. The monitor is so quiet it is great. We do not hear any additional noises but our daughter. The only negative thing that I would have to say is that I wish the sound went up a little louder but over all this is a great monitor in which I have recommended to friends.