changing your clocks is a good reminder to check your smoke alarms. Fire officials recommend changing smoke alarm batteries twice a year, around the time of the spring and fall clock changes.
Here are some tips for checking your smoke alarms:
Test them
Use the test button on each smoke alarm to make sure it's working. You should hear a beep or chirp.
Change the batteries
If your smoke alarms use standard batteries, change them at least once a year. Some smoke alarms have long-life batteries that don't need to be replaced.
Install smoke alarms
Make sure you have a smoke alarm on every level of your home, including the basement, and outside each sleeping area.
Clean them
Use the soft brush attachment of a vacuum to gently remove dust from the sensors.
Replace them
After 10 years, it's best to replace the entire smoke alarm.
Working smoke alarms can reduce the chances of dying in a fire by almost 50%.