| This smoke detector has a ten year life battery making it one of the most reliable smoke alrarms to date. The 85 decibel alarm activates when detecting smoke or fire! A silencer button decreases sensitivety for ten minutes allowing for fewer nuisance alarms (like when the toast burns). An activation light flashes every 45 seconds to let you know the alarm is operating correctly. A low battery triggers an audible "beep" indicating the battery needs to be replaced. This UL approved smoke detector includes one lithium battery. |
