These interferences can also cause sounds to be muffled and inaudible. So Are EVPs Real? Do you believe in ghosts? Do you believe in the afterlife? These questions seem to have no specific and factual answers and so does the question Are EVPs real? A sound is just a sound and it all depends on how they are interpreted. In addition, you also need to check the battery life and power source. You should at least get a hold of answers for questions such as: "Will I need to recharge it frequently?" Interference Since a baby monitor is basically a wireless device, it is highly possible to experience interference with the signal. These gadgets enable parents to multi-task do other chores while still being able to watch over their baby. However, these gadgets may sometimes cause annoyances rather than comfort and relief especially when you live in close proximity with your neighbours such as in flats. Wireless baby monitors are usually the gadgets that experience this kind of problem. The wide range of options include rechargeable batteries for the portable receivers, remote controls, warning alerts for movements or lack thereof, and monitors with musical capabilities. Of course, you need to thoroughly choose features that suit you and your baby; otherwise, you'll end up spending money for something you don't really need. 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. 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. How Does It Play A Role In the Safety of the Child? What baby monitors basically do, is allow the parents to know their child s activities and to watch out for any possible problems from afar, especially if the baby is asleep.