On November 2 at 2 a.m. EST Daylight Saving Time will officially end as we turn our clocks back one hour. The time change is a good reminder to check your smoke alarms. A properly installed and maintained smoke alarm is the only thing in your home that can alert you and your family to a fire 24 hours a day, seven days a week. Whether you’re awake or asleep, a working smoke alarm is constantly on alert, scanning the air for fire and smoke.