Kidde Firex Hardwired Smoke Alarm I4618,Kidde,i4618" /> Latching LED, a red LED flashes until reset for quick, clear identification of the initiating smoke alarm in an interconnected system Visible low battery indicator, helps locate chirping unit Front loading battery door makes battery changing simple and power link tab makes installation faster and easier False alarm control quiets unwanted alarms for up to 15 minutes Interconnects with other Firex smoke alarms and heat alarms compatible with other contractor preferred Firex products