First Alert Onelink sends alarm notification to your smartphone whenever smoke or CO is detected. The battery version has either a sealed battery (1st generation) or replaceable battery pack (2nd generation). The voice alarm is programmable to announce the exact alarm location. This smart smoke detector uses photoelectric sensor and is good at detecting slow smoldering fires only. For fast flaming fires detection, it’s recommended to complement it with another detector with ionization sensor. Click on the title to learn more.
Options: battery or wired
Alexa-enabled model: Onelinke Safe & Sound