When you change your clocks for daylight savings time today, take a minute to test your smoke and carbon monoxide detectors. Many older smoke detectors take batteries and you should ensure those are installed and changed as necessary. Newer smoke detectors may not have accessible batteries, but should be checked to see if they are functioning. If you have a separate carbon monoxide detector, be sure to check that too.
While there are differences between models, most detectors have a visible test button on the face of the unit. Press the button, wait a few seconds, and listen for the alarm sound. If the sound is weak or absent, replace the batteries or the detector. Some detectors have a lifespan or expiration date that should also be checked. Ideally, know the manufacturers guidelines for testing and maintaining your specific device.