Smoke Alarms

It is so important to have several smoke alarms put in our homes. It is also important to change the batteries at least every 6 months. The best time to do that is at daylight savings time. One thing I noticed is to replace the alarms if they are several years old. We have one in our upstairs that we have had for years and I found out the other day that it does not work correctly so I purchased a new one.