First Alert AC10-500 One Link Wi-Fi Smoke And Carbon Monoxide Detector, Hardwired

Remotely test the alarm or silence false alarms through free one link appInterconnects with other wired alarms in the home, setting off every alarm in the home when one alarm detects an emergencyMaximum protection from both smoke and carbon monoxide utilizing photoelectric and carbon monoxide sensing technologiesNo battery replacements needed, 10 year sealed battery lasts the life of the alarmVoice and location technology that in the event of an emergency tells you the type of danger and its locationRemotely test the alarm or silence false alarms through free Onelink app