Nest is a startup company founded by former Apple hardware engineer Tony Fadell. They formerly created the Nest learning thermostat. Their newest creation is a high-tech smoke and carbon monoxide detector called the Nest Protect. The Protect is app enabled so it can alert you on your phone in case of a change in smoke or carbon monoxide levels in your home. The Protect also communicates with the other Protect units in the home as well as the Nest learning thermostat. The Nest Protect is also equipped with a motion sensor which turns on a light indicator whenever it senses movement. The light glows green, yellow or red depending on the levels of smoke and carbon monoxide in the air. The mobile app allows the user to see which rooms are safe, as well as when motion was last detected. It also shows the battery life of each device making maintenance easy. Access to all of this information on the go is invaluable.