Many deaths from home fires were preventable. Too often it ends up that the home didn’t have a smoke detector, or the smoke detector had its battery pulled out. While a chirping fire alarm can drive most of us nuts, the solution is to replace the battery, not pull it out. As a safer alternative, some homes have wired smoke detectors with a battery backup, which means that they should always be ready to warn you of a fire.
It is also important to have the alarms installed in the right locations. You should have them at least outside of every bedroom in your home so you can be woken up if there is a fire. There should also be at least one on every floor, as well as one near any flammable chemicals you might have. Your smoke detector can save your life, but only if you make sure that it is installed.