<p>Nest Protect is a smoke alarm but not as you know it. This clever device has advanced technology to speak when it detects smoke or carbon monoxide, sends you phone alerts to tell you what's wrong when you're not home via the free downloadable Nest app, and changes its ring colour to communicate.</p> <p>Simply silence the smoke alarm from your phone if you've accidentally burnt some toast. Its Split-Spectrum Sensor uses two wavelengths of light to detect smoke from both fast-burning and smouldering fires, tests its batteries and sensors repeatedly, and is the first alarm to use Sound Check to quietly test its speaker and siren once a month.</p> <p>Plus, Nest Protect has a carbon monoxide sensor that lasts for up to a decade. Nest Protect doubles as a night light and indicates it has tested its batteries before you retire for the night. Set up is quick and easy via the Nest app on your compatible phone.</p>