Founded by Firefighters, LifeDoor is a smarthome company dedicated to saving lives and property through technology. Our first product LD1 automatically closes interior doors when triggered by the sound of a smoke alarm. LD1 also lights up the room and sounds a secondary alarm. This action is proven to increase survivable time for occupants for up to 20 mins vs. a door that is open. LifeDoor is taking the advice from all fire safety authorities to "close before you doze" and making it an automatic reaction to smoke alarms being triggered.