Smoke detectors and CO alarms save lives by alerting residents to dangerous fires or deadly carbon monoxide. In order for these products to work, they need working batteries. Change these batteries at least once a year for fresh results. A good time to change the batteries is when the clocks change for Daylight Saving Time.
You should also check your smoke and CO alarms at least once a month to make sure that they’re still working properly. Make sure that you have both kinds of alarm installed on every level of the home and outside sleeping areas. However, you don’t need to worry about putting a CO alarm in the attic or a basement unless there is a sleeping area in that part of the home.