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. Baby Monitors: Mom s Best Friend Pregnant mothers take care of themselves during gestation knowing that everything that they come upon would affect the tiny baby growing inside them. She would take every precaution to avoid anything that is detrimental to the baby. Part of it would be choosing the appropriate nutrition and activity to ensure the baby s safety. The video monitor on the other hand works like a tiny TV by having a camera record the baby s movements while the parent could watch on a small screen receiver. And the sensory monitor is a movement detector that alarms the parent when it cannot perceive any movement from the child for more than 20 seconds. Just setup the wireless device for the baby anywhere you want in the room without worrying whether the length of the wire is enough to reach the other room where you will setup the receiver. In terms of aesthetics, wireless baby monitors also provide parents an advantage. You do not have to worry about wires sticking out or going out of place. With wireless devices, parents can go anywhere around the house while still being able to keep tabs over their babies. The only setbacks of wireless baby monitors are that it can be more expensive to wired devices and they are also prone to interference. Wireless Baby Monitors: Solving Interference Problems Issues of interference with wireless devices have been the long time concern of parents who use wireless baby monitors. Then again, technological innovations have made it possible to combine sound and visual monitoring. Although the video option seems like a brilliant idea, you still won't be able to stare at the screen all the time. For that reason, you definitely shouldn t sacrifice an excellent sound quality over supplementary features.