Not having this feature could be very dangerous to the child because one might not notice that something wrong has already happened if the monitor stops working when the battery drains. In choosing a monitor, the right range or bandwidth must be considered properly. If it would be used in a bigger house, then a wider range is required. A variety of products not only permits auditory signals to be heard but even allow the mother from the receiver s end to visualize their baby and play music to soothe the baby even from a distance. 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. The video monitor on the other hand works like a tiny TV by having a camera record the baby s movements while the parent could watch on a small screen receiver. 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. 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. A typical baby monitor set consists of two parts: a radio transmitter and a portable receiver. The radio transmitter must be positioned 8 to 10 feet away from your baby's crib. Always remember, that in choosing the type of baby monitor for your family you must reflect on which model would best suit you and your baby s needs. The size of your home, and the clarity of frequency are very important factors to consider. Simpler monitor models will do for smaller houses, but you may need a more sophisticated monitor system for a larger house. Then again, technological innovations have made it possible to combine sound and visual monitoring. Although the video option seems like a brilliant idea, you still won't be able to stare at the screen all the time. For that reason, you definitely shouldn t sacrifice an excellent sound quality over supplementary features.