A smoke and carbon monoxide alarm that will send you alerts to your smartphone when you're not home.
The Nest Protect can detect whether fires are fast burning or slow burning to let you know so that you can act accordingly. If the alarm goes off while you're cooking and it's nothing to be concerned about you could silence it from your smartphone. The Nest actually speaks up and warns you where the problem is. Nest Protect will keep you safe for 10 years which is the longest time allowed by law for a smoke detector.