The most disadvantageous aspect of these wireless devices is interference. Wireless interference may come as irksome sounds, static sounds or buzzing sounds. In video monitors, interference may come in the form of fuzzy or static reception. These wireless interferences are usually caused by other wireless devices around the house like the wireless phone or a router. The most simple baby monitors make use of a simplex transmitter and receiver system. In the baby s room, a transmitter device with microphone is installed while the parents have a receiver device with a speaker. Any sound the baby makes in the room will be transmitted directly to the device held by the parents. It is extremely helpful; especially to parents who cannot possibly stay by their baby s side at all times. The most common type used is the audio monitor. This type receives and transmits sounds produced by the baby to a parent unit so moms or dads could hear the activities of the baby and know if there are any problems while they are at a certain distance. In the past, baby monitors were simple gadgets making use of a transmitter and receiver system. But now, as modern day technology progresses, so do the baby monitors. As of today, digital baby monitors have risen up to provide parents better quality and functionality when it comes to baby monitors. Digital Baby Monitors and Other Baby Monitors One obvious difference between digital baby monitors and other old baby monitors is that it s digital! Mobile baby monitors make it possible for parents to keep tabs on their infants without the necessity of staying awake or standing outside the nursery door all night. A typical baby monitor set consists of two parts: a radio transmitter and a portable receiver. The radio transmitter must be positioned 8 to 10 feet away from your baby's crib. But if you do have the money for it then by all means, then go ahead and purchase one. All of these are just some of the ways on how to fix interferences in baby monitors. They are not 100% percent fool proof solution but they will be able to help minimize interferences especially when you live in a flat.