Nest Protect Smoke and CO Alarm

Made by Alphabet, the parent company of Google, Nest Protect (available in battery-operated or wired) is a smoke alarm with smarts. Whether you’re at home or out, it can sense carbon monoxide and smoke and send alerts to your smartphone. And it’s clever enough to differentiate between fastburning and smouldering fires and adjusts the alerts accordingly. It has a voice function so can tell you where it’s detecting the smoke, meaning you can give the all clear if it’s just burnt toast before the alarm starts sounding. If you’re away, Nest Protect can send your phone updates about its battery life. It can also alert multiple phones – just in case.