Google Nest Protect S3003LWES Wired Smoke and Carbon Monoxide Alarm , 2nd Generation - White

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  • Smart Smoke and CO Detection
  • Receive Alerts on Smart Devices
  • Detects Fast & Slow Burning Fires
  • Wired Installation with Battery Backup
  • In stock
    Special Price $118.95 Regular Price $199.95

    It’s time to expect morefrom your smoke alarm.

    Nest Protect has been redesigned from the inside out. It has a Split-Spectrum Sensor, tests itself automatically and lasts up to a decade. It’s also the first home alarm you can hush from your phone without any extra hardware required. And it tells you what’s wrong and can even alert your phone.

    The smoke alarm other alarms look up to.
    Thinks, before it speaks.

    Nest Protect has a friendly human voice that gives you an early warning. That way you can handle burning toast before it becomes a burning toaster.

    Sees both fast and slow burning fires.

    The foam and particle board in much of today’s furniture make fires burn faster. Technology should keep up. The Split‑Spectrum Sensor uses two wavelengths of light to detect smoke from both fast-burning and smoldering fires.

    10-year CO sensor.

    Carbon monoxide is poisonous but you can’t see it or smell it. That’s why Nest Protect has the most accurate type of carbon monoxide sensor available. We also improved our carbon monoxide sensing algorithm. And we’ll keep working to make it better and better because people depend on it.

    Tests itself

    You’re supposed to test smoke alarms monthly. But 9 out of 10 people don’t. So Nest Protect checks its batteries and sensors over 400 times a day. And it’s the first alarm that uses Sound Check to quietly test its speaker and horn once a month.

    Lights your way

    If you need a glass of milk in the middle of the night, Nest Protect lights up as you walk underneath it. Pathlight is one of our customers’ favorite features so we made it better and brighter.

    Steam is not smoke

    Has your alarm ever yelled at you for taking a shower? Nest Protect is the only alarm with Steam Check. It uses custom algorithms and a humidity sensor to look for steam, so you can enjoy a nice, quiet shower.

    Count sheep, not chirps.

    No one should be woken up by a low-battery chirp at 2 a.m. When you turn off the lights, look for a quick green glow. That’s our Nightly Promise. It means all your Nest Protects have tested themselves, the batteries are good, and there won’t be any chirps. Sweet dreams.

    Look for the light ring.

    In addition to its voice, Nest Protect uses colors to communicate. And we gave the new Nest Protect a brighter light ring so it’s easier to see in an emergency and better at helping you see things in the dark.

    Technical Specifications :

    Dimensions & Weight

    • DimensionsLength: 5.3 in (13.4 cm)
    • Width: 1.6 in (3.95 cm)
    • Height: 5.3 in (13.4 cm)
    • WeightNest Protect Battery: 13.9 oz (379.0 g)
    • Nest Protect Wired: 13.2 oz (375.0 g)


    • Split‑Spectrum smoke sensor
    • 10 year electrochemical carbon monoxide sensor
    • Temperature
    • Humidity
    • Occupancy (120° field of view up to 20 feet)
    • Ambient light
    • Accelerometer
    • Microphone


    • Battery model: Six long-life AA batteries (Energizer Ultimate Lithium “L91”)
    • Wired model: Three long-life backup AA batteries (Energizer Ultimate Lithium “L91”)


    • 802.11b/g/n (2.4GHz)
    • Wi-Fi802.15.4 (2.4GHz)
    • Bluetooth Low Energy

    Operating Temperature

    The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4 ºC) or exceeds 100ºF (38 ºC). Humidity range: 20%RH to 80%RH (non condensing).


    Speaker loudness: 80 dB @ 3 ft (1 m) @ 1kHz


    85 dB SPL @ 10 ft (3 m)

    External Buttons

    RGB color ring with 6 LEDs

    Package Contents :

    • Nest Protect: 2nd Gen Smoke + CO Alarm
    • Backplate
    • Four screws
    • User’s guide
    • Welcome guide
    • Six long-life AA batteries (Battery model)
    • Three long-life backup AA batteries (Wired model)
    • 120V AC connector (Wired model)
    • Three wire nuts (Wired model)
    More Information
    Special Price $118.95
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