Push the tab on the bottom of the GE push button inward with a small flat-head screwdriver. Pull the bottom half of the push button away from the mounting plate while holding the tab with the screwdriver. Pull the push button completely away from the mounting plate.
Pull the battery out of the back of the push button. Locate the jumper that is on either the seven, eight or nine channel on the row of channels below the battery holder.
Grab the jumper with your fingers and pull it out. Place the jumper in one of the other channels to change the door chime. Push the push button back over the mounting plate until it snaps into the locked position.