At daytime, a baby monitor also provides you with an enormous freedom to do other things during your baby's naptime. 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. However, with the many different kinds of monitors available in the market at present sometimes it may get confusing. Knowing the different types of monitors and what to consider will surely help you in making a choice. What are the types of baby monitors? In selecting a monitor that best fits your family, you have three major options to choose from an audio, video or a sensory monitor. First and foremost, baby monitors work more efficiently between ground floor and first floor areas. However, if your home is made of thick concrete walls or has aluminum siding, then this can terribly decrease the strength of the transmitted signal. Parents who own baby monitors have also reported instances of interference. Wired or Wireless Baby video monitors can either be wired or wireless. There is really not much difference between the two in terms of monitoring quality except for the fact that wired devices use wires while the wireless ones don t. If you intend to use the video monitor at only one location, then you may opt to use the wired version. In the world of the ghost hunters, EVPs are voice recordings that are sent by ghosts or souls that have not moved on. These are sometimes used to prove that there really is life after death. While some ghost hunters use sophisticated gadgets and devices to hunt down ghost phenomenon, there are those who use baby monitors. The most disadvantageous aspect of these wireless devices is interference. Wireless interference may come as irksome sounds, static sounds or buzzing sounds. In video monitors, interference may come in the form of fuzzy or static reception. These wireless interferences are usually caused by other wireless devices around the house like the wireless phone or a router.