Smoke detectors are important because they can alert you of a fire and help you save your life. They are often located in the ceiling or wall, but can be attached to the wall with screws or adhesive. When installing a smoke detector, make sure it is at least 10 inches away from anything that will burn such as a stove, radiator, or any appliance that generates heat. You can also place them in your bedroom, bathroom, or near your front door.