But when examined by professional ghost hunters, they turn out to be ghost voices also known as electronic voice phenomenon. Baby Monitors and Interference Baby monitors can either be wired and wireless. Both types of devices have their own advantages and disadvantages. For wireless devices though, one of the disadvantages is interference. They experience interferences because of different factors one of which is the use of other wireless devices either in your flat or in the flat of other tenants. Luckily, there are several ways on how to, if not eliminate, at least minimize the existence of interference. On top of the list is changing the channel or frequency of your baby monitor. Heart Beat Monitor This feature is a must for the device that you will choose since no apnea monitor is 100 percent accurate in detecting cessation of breathing. This will serve as a backup in case the apnea monitor fails to detect apnea because it will also manifest in the heart rate of the baby. Another must have feature is a remote alarm. This is where baby monitors come in handy. With these devices, you will still be able to monitor your baby even if he or she is in another room. What Are Baby Monitors? Basically, a baby monitor, also known as a baby alarm, is a device that can be used to monitor your children or babies even if they are located in a separate room than yours. So what do you do? You can use baby video monitors. What are baby video monitors? Baby video monitors are the advance version of the simplex transmitter and receiver system of baby monitors. In the past, baby monitors are only one way transmissions audio from baby s room are sent to parent s receiver and that s it. They will provide you with the latest in technology baby monitors. The better the technology, the better monitoring will be. Disadvantages of Using Professional Wireless Baby Monitors LCD The biggest disadvantage of using professional wireless baby monitors is its cost. Compared to using off the shelf gadgets, professional ones will cost way much higher.