door chimes

Door chimes, sometimes called door bells, are a convenient way of having notification that someone is at one of your doors. Sometimes having someone knocking doesn't alert you to visitors, but having a centrally locted door chime to alert you can have its benefits. With a simple push of a button at the front or back door, you'll be notified that someone is waiting to enter your home via the door. Once the button is pushed, the chime or bell rings at a centrally located box that holds the chime/bell ringer. Door chimes have distinctive chimes for each door button. The front and back door rings are different so that you can distinguish between the doors.http://www.chimecity.com/