Help keep your family safe with this battery-operated smoke and carbon monoxide combination alarm. This easy-to-install smoke and carbon monoxide combination alarm connects with other Z-Wave compatible alarms and a Z-Wave hub (sold separately)Integrated wireless alarm system is Iris compatible to send you mobile alerts and emails, so you're aware of dangers after the alarm is activated, whether you're home or awayAlarm features photoelectric smoke-sensing technology optimized to detect larger smoke particles produced by smoldering fires, and an electrochemical carbon monoxide sensorCertified for use with Nexia Home Intelligence, Ring Home Security System, and other third party Z-Wave systems; not compatible with WINK or OnelinkIncludes test/silence button, side-access battery door, plus a tamper-resistant battery drawer and pins that lock the alarm to the mounting bracketCertified for use with Nexia Home Intelligence or other Z-Wave systemsCombination Smoke and Carbon Monoxide protection that alerts you whether you are home or awayPhotoelectric smoke sensor helps reduce false alarms such as from cooking or shower steam