What does the yellow “Low Battery” light mean?
If the Low Battery light comes on you should either switch to using the wall adapter or change to a fresh nine volt battery. This yellow light is set to come on when the battery power drops to 5 volts and you should not be trying to make good remedies with the yellow light on. When replacing the battery be cautious when you remove the battery clip from the battery as you could pull the cord loose from inside the instrument if the cord is pulled too hard.