Keeping your family safe is a priority. Did you know that three out of five home fire deaths result from homes without working smoke alarms? Dual sensor smoke alarms, which contain both ionization and photoelectric smoke sensors, can be hardwired to your house. These alarms also contain a backup battery. The battery should be replaced once a year. There are also alarms for people with hearing loss. These alarms may have strobe lights that flash and/or vibrate to alert those who are unable to hear standard smoke alarms when they sound.