Place properly installed and maintained smoke alarms both inside and outside of sleeping areas and on every level of your home.
Interconnected smoke alarms are best because if one sounds, they all sound.
Get smoke alarms that can sound fast. Because both ionization and photoelectric smoke alarms are better at detecting distinctly different, yet potentially fatal fires, and because no one can predict what type of fire might start in a home, the USFA recommends that every residence and place where people sleep be equipped with a) both ionization and photoelectric smoke alarms, or b) dual sensor smoke alarms (which contain both ionization and photoelectric smoke sensors).
Test smoke alarms monthly and change alkaline batteries at least once every year, or as instructed. You can use a date you already know, like your birthday or when you change your clocks as a reminder.
Consider buying a long-life (lithium) battery-powered smoke alarm, which may last up to ten years with no battery change.
Install smoke alarms away from air vents.
Install smoke alarms on the ceiling or wall, at least 4 inches from corners or according to manufacturer's instructions.
If a smoke alarm sounds during normal cooking or when bathing, press the hush button if the smoke alarm has one. Open the door or window and fan the area with a towel to get the air moving. Do not disable the smoke alarm or take out the batteries. If this happens often, the smoke alarm will need to be relocated.