wireless medical alert
3. Rest at ease, and have the peace of mind that your home is protected with the First Alert SA320CN Double Battery Powered smoke detector. It comes with a 10 year warranty. The First Alert operates with AA batteries and should be checked twice a year for battery life. Both Ionized and Photo Electric smoke sensorsDetects smoke from both smoldering and flaming firesLoud alarm to rapid responseSensors that detect non fires to reduce false alarms10 Year limited warranty– Anthony Dawson View on Amazon See also onAmazon. co.