Having a working smoke alarm cuts the chances of dying in a reported fire in half; with sprinklers present, the risk decreases by about 80%

Smoke alarms have a life span of about 10 years. After that, they need to be replaced. The batteries should be replaced every six months. And yes, even hard wired (electric) smoke alarms have batteries as a back-up that need to be maintained as well. Never remove the batteries from a smoke alarm!

When you hear the alarm, get out and stay out!