Smart smoke detectors operate much like traditional smoke detectors, sounding an alarm when smoke or fire is detected and providing as much warning as possible for you to get out safely in the event of a house fire. However, smart smoke detectors have an edge over traditional smoke detectors due to their ability to send a notification to your phone when the alarm is triggered — even if you are away from home. Smart smoke detectors also notify you when the battery gets low or if there is a problem with the sensors in the unit, which often include humidity and temperature sensors. These two capabilities alone have the unparalleled ability to save the lives of you and your family. These capabilities also come in very handy for second homes and rental units.