Nest Protect is a $130 smoke and carbon-monoxide detector. It has a sleek design, offers the ability to remotely monitor via mobile device, and wave off false alarms with your hand. Rather than producing a loud noise, Protect alerts you to hazards in a calm female voice which says helpful things like “There's carbon monoxide in the den.” The device also has the ability to send alerts to the Nest smartphone app. A good thing about Nest Protect is its ability to wave to silence the alarm when something small like a burnt toaster pancake sets it off.
