For wireless devices though, one of the disadvantages is interference. Interferences can be in the form of intercepted voices from other wireless devices such as wireless phones or static sounds. These interferences can also cause sounds to be muffled and inaudible. So Are EVPs Real? Do you believe in ghosts? Some models even have extra capabilities including a video monitoring feature and an option that lets your baby hear your comforting voice. Factors To Consider When Buying A Baby Monitor Low-battery Indicator As much as possible, you should purchase a baby monitor that has a low-battery indicator. In this way, you will be alerted whenever your batteries need replacement. Flats And Baby Monitors: Fixing Interference Problems Flats and baby monitors have a very interesting relationship the former may cause problems for the latter. This has been the concern of parents who use baby monitors in their flats. Because of the number of tenants who also use different gadgets, interference among baby monitors is quite common. If you prefer to have one radio transmitter in every room, there are actually a smaller number of choices. In order to set up a multi-room monitoring system, some parents purchase more than one baby monitors. 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. Remember that the base unit of your cordless phone should be switched on last. 3) Purchase a digital baby monitor instead. To make sure that your neighbors will not be able to pick up the sounds transmitted by your baby monitor, buy a digital type as an alternative to the analog version. This way, you can rest assured that the only sounds you'll hear are the ones that have originated from your baby's room. 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.