If people sleep with doors closed, install smoke alarms inside sleeping areas, too. Use the test button to check each smoke alarm once a month. When necessary, replace batteries immediately. Replace all batteries at least once a year. Vacuum away cobwebs and dust from your smoke alarms monthly.
Smoke alarms become less sensitive over time.
Replace your smoke alarms every ten years. Consider having one or more working fire extinguishers in your home. Get training from the fire department in how to use them. Consider installing an automatic fire sprinkler system in your home. Plan Your Escape Routes Determine at least two ways to escape from every room of your home.