There are also disadvantages to using a baby monitor. If you have a cordless phone, the baby monitor can pick up the conversation so you need to be discreet. Even talking in the same room as the baby will transfer the sound of your voice to the receiver, so you can't complain about visitors that won't go home. In once case we had neighbors with the same monitor on the same frequency and we could hear their entire night-time routine if our monitor was on. You also have to make sure that you keep the monitors away from bathtubs and pools because they are electrical devices.
Overall a baby monitor is a very useful thing to have. They give you a sense of comfort and let you get on with your day while your child is sleeping. Never forget that a monitor can NEVER replace proper parental care. Never leave your baby unattended for long periods (even while sleeping chech on them from time to time).
About The Author
Helen Walters provides a variety of information on issues important to parents. http://www.greatbabygear.com/baby-monitors.html is home to a growing collection of articles and reviews of growing selection of baby monitors from major manufacturers.