Built-in Split-Spectrum Sensor. It knows the difference between steam and an emergency situation, so there is no waving the tea towel to hush a false alarm. It speaks up to tell you if there is a problem and where it is and will give you a friendly Heads-Up before it sounds the alarm so you can hush it from your phone, wherever you are. With Nest Protect, you get extra peace of mind as it tests itself over 400 times a day and shows you everything’s working with a quick green glow when you turn off the lights. At night, lights itself up when you walk past - acting like your very own night light.  Mobile alerts require a compatible smart device and an Internet connection.
 
Features:
Get Alerts On Your Mobile. Nest Protect Sends You A Message When There’s A Problem Or The Batteries Are Running Low.
Tells You What, And Where. Nest Protect Speaks Up When It Detects Smoke Or CO And Tells You Where It Is So That You Know What To Do.
Sees The CO That You Can’t. Nest Protect Is Also A Detector Of Carbon Monoxide, An Invisible, Poisonous Gas And Tells You Where It’s Hiding.
A Light In The Dark. When You Walk Underneath The Alarm, Pathlight Can Light Your Way.
Every Second Counts. The Split-Spectrum Sensor Is A Detector For Both Fast- And Slow-burning Fires.
Silence From The Nest App. Just Burned The Toast? Silence The False Alarm With Your Mobile, Not Your Tea Towel.
Up To 10 Years Life Span. Nest Protect’s Long-lasting Sensors Keep You Safe And Sound For Up To A Decade.
Sleep Safely And Soundly. Nightly Promise Is A Quick Green Glow That Can Be Seen When You Turn Off The Lights, Letting You Know Everything’s Working As It Should.
 
What's in The Box?
Nest Protect (Wired 230V)
Six long-life batteries (Energizer® Ultimate Lithium "L91" AA)
Back plate and Four Screws