The beginning of Daylight Savings Time is a good reminder to check the batteries in your smoke detectors and gas detectors. Press the “test” button to make sure they are working. Really, you should replace batteries whenever you hear them “chirp”, but if someone forgot to do that, then test them now. Also keep in mind that detectors have a limited lifetime, and they need to be completely replaced according to manufacturer's recommendations (usually every 5 - 10 years).