These Philips digital monitors guarantee zero interference, but I suppose that is if you do not have any other wireless devices in your home. There is a two-way talk back system which allows you to talk back to your baby with out going into there room which I think is a good idea. These monitors have a great feature because when you are trying to get your little one asleep you use the night light that is on the monitor and also it will play five lullabies this is a great to have. So if you are looking for extra reassurance while your baby is sleeping hen these could be the ones for you.