By simply positioning one radio transmitter in each room, you can listen to the sounds coming from your baby's room even if you're busy with house chores or other stuff. Then again, this added capability comes with a number of drawbacks. The baby monitors could interfere with each other. For that reason, you need to make sure that they are set in different frequency bands; otherwise, you will only be able to hear irritating electronic screeches. Parents could sing their lullabies or read stories while they do the laundry or while they clean the house. Even at a distance, parents are empowered to interact with their child through the device. And children, upon recognizing the familiar voice of their parents are given the assurance that they are watched and are in a safe place, which can be soothing to them. Symptoms of this type of apnea include snoring, labored breathing, gasping for air, and changes in color. But the cardinal sign of obstructive apnea in babies is restlessness. Another type of apnea is central apnea. This is usually caused by defect in the part of the brain the controls breathing. In babies, this could be a congenital defect. With baby monitors, you can keep track of your baby s even if you are doing something else in the proximity of your house. Types of Baby Monitors Baby monitors have evolved through the years. From the simple transmitter and receiver device, different baby monitors have been developed. Currently, there are two types of baby monitors: video baby monitors and audio baby monitors. There is really not much difference between the two in terms of monitoring quality except for the fact that wired devices use wires while the wireless ones don t. If you intend to use the video monitor at only one location, then you may opt to use the wired version. But if you intend to use the video monitor in different places all over the house then it would be a good idea to avail of the wireless devices. Baby monitors are good for this kind of activities since they are quite sensitive to sounds as well as other factors in the environment. There have been a lot of reported cases by parents that they are getting signals from the baby units that are not relevant to the baby or the environment. Instead, they receive muffled, indefinable, and sometimes almost inaudible sounds which resemble voices and words coming from a human.