The HomeKit-enabled Onelink by FIRST ALERT Wi-Fi smoke and carbon monoxide alarm and the free one link home app on your iPhone or iPad work for your peace of mind, so you know your home is safer and truly just one link away. This alarm will detect and alert you in the event of a smoke or carbon monoxide emergency. With the Onelink by FIRST ALERT Wi-Fi smoke and carbon monoxide alarm you can forget about battery replacements because this alarm doesn't need them. This alarm was designed to last for 10 years, the longest time permitted by the national fire code.
