Doorbell chimes make a sound when someone presses your doorbell. This is useful, because then you can hear that someone is at the door everywhere in the house. You can put the chime, also called a gong, in a socket in the house. Your doorbell will then connect to it wirelessly. You can choose the sound of the doorbell receiver yourself and adjust the volume. This way, you can tailor the sound of the doorbell exactly to your wishes.