The world's first home kit-enabled Wi-Fi smoke + co alarm is tested to the highest industry standards for safety and security plus with home kit privacy is built in and data is always encrypted;10 year sealed battery backup - no costly battery replacements for the life of the alarm and no low battery chirps in the middle of the night;This alarm sends you notifications in the event of a smoke or carbon monoxide emergency, you can also test and Silence false alarms on your iPhone or iPad. Requires iOS 9.0 or later;This alarm will also talk to you- telling you the Type of danger (smoke or co) and where it is located. These alarms will also work together, when one onelink alarm sounds all compatible interconnected alarms will sound as one;Unique Bluetooth mesh- these alarms utilize unique Bluetooth mesh to speak with each other and Wi-Fi allows users to receive emergency notifications

• Onelink Wi-Fi Smoke + Carbon Monoxide Alarm, Hardwired, Apple HomeKit-enabled

Onelink Wi-Fi Smoke + Carbon Monoxide Alarm, Hardwired, Apple HomeKit-enabledFirst Alert