These gadgets allow parents to monitor the baby s activities while they are not inside of the nursery or are working at a distance. What Is a Baby Monitor and How Does It Work? A baby monitor is a gadget set that has a transmitter and receiver, which sends either sound or video (depending on the type) for the parent to be able to supervise the activities of the baby while he or she is away. On the other hand, the digital model may cost a little more but it provides more privacy and usually has a wider range of reception than analog. Another advantage is that the digital models do not have as much static and they give a clearer sound quality so you can hear your baby better. Video monitorsallow you to see and hear your child by combining sound and video just like miniature TV sets. There are even some devices that will let you send commands to the baby s device to play different music to hush him or her back to sleep. Both types of baby monitors, audio and video, can either be wired or wireless. The wireless devices may, in some cases, be more advantageous than the wired devices since you will be able to go anywhere anytime for as long as both devices are within range. But what if baby monitor transmitters pick up more than what they are supposed to? It has been the topic of discussions that baby monitors, especially audio types, pick up more than just sounds coming from the baby. Some parents tell stories of their baby monitors picking up EVPs. What are EVPs EVP is short for the term Electronic Voice Phenomenon. But if you do have the money for it then by all means, then go ahead and purchase one. All of these are just some of the ways on how to fix interferences in baby monitors. They are not 100% percent fool proof solution but they will be able to help minimize interferences especially when you live in a flat. The radio transmitter must be positioned 8 to 10 feet away from your baby's crib. Then again, you can always position it closer to the baby for better reception of sounds. The signal picked up by the radio transmitter is then passed on to the portable receiver, which can be carried effortlessly around the house.