As a rule, you need to place the radio transmitter within 10 feet of the crib so that it can pick up even the slightest sounds made by your baby such as breathing and movement. You can then carry the portable receiver around during the day or just leave it plugged in at the side of your bed at nighttime. Why You Should Use Digital Baby Monitors Baby monitors are the parents best friends when it comes to keeping tabs on their babies. These devices provide an extra ear and extra eye to ensure the safety of the little ones. In the past, baby monitors were simple gadgets making use of a transmitter and receiver system. Just a few presses on the dial pad of the phone and you will right away be presented with several solutions to the problem you are experiencing. Installation of different baby monitors can sometimes be hassle especially if you do not know anything about gadgets and other electronic devices. Other people will do it for you while still asking for your consultation. Some parents tell stories of their baby monitors picking up EVPs. What are EVPs EVP is short for the term Electronic Voice Phenomenon. EVPs pertain to sounds or voices that are allegedly coming from beyond the grave. In the world of the ghost hunters, EVPs are voice recordings that are sent by ghosts or souls that have not moved on. To this date, they are no longer just an electric device to keep an eye when the baby cries but offers a number of advantages in ascertaining the baby s well-being. Some top of the trade devices have sensors placed under the baby s mattress that detects even the most subtle of movements including the baby s breathing. A smaller house or apartment might not need as much range especially if one lives in an area where there may be a lot of interference such as cell phones and other monitors that could disrupt the signals. But it is also important to consider the user s activity, especially if work might require him or her to be of farther distance from the child.