If it would be used in a bigger house, then a wider range is required. 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. 3) If you have money to splurge on these kinds of devices, you can go for digital baby monitors instead of the analog ones. Digital technology has incorporated fixes to help solve the issue of interference. These are some of the best solutions that parents can take to minimize wireless interference. They may not be able to eliminate interference totally but they can help in minimizing their occurrence. You and your next-door neighbors may utilize similar channels and wind up hearing noises from each other's homes. Cordless telephones may also interfere with your signal. In case interference is a big issue for you, you can always look for something that utilizes the so-called no-interference technology or has additional security features. So how do you go on with your daily activities without sacrificing the quality of security, love, and care that you need to give your baby? You can use video baby monitors. Baby Monitors Basically, baby monitors are devices that parents can use to be able to observe their baby even if they are not in the same room. The set is synchronized to a predetermined frequency band that gives off a frequency modulation (FM) signal once it is switched on. More often than not, these portable monitors send out signals between the range of 49,830 MHz and 49,890 MHz. Why do you need to buy one? 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. 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. If the sound of a cat is interpreted as a moo of the cow, then it comes from a cow.