Nest Protect Smoke + CO Alarm 3 pack - Battery


Item: 893503
Brand: Nest
Model: 4T8035


Meet Nest Protect.

There’s never been a smoke and CO alarm quite like this. Nest Protect alerts you when it detects carbon monoxide, smoldering fires and fast-burning fires. Away from home? No need to worry — Nest Protect will contact you on your smartphone.

  • Detects smoke and carbon monoxide
  • 10-year product lifetime
  • Safety checkup
  • Heads-up alerts
  • Wireless Interconnect



How Does it Work?

Get alerts on your smartphone.
Nest Protect sends you a message when there’s a problem or the batteries run low.
Tells you what and where.
Nest Protect speaks up if there’s smoke or CO and tells you where it is, so you know what to do.
Sees the CO you can’t.
Carbon monoxide is an invisible, poisonous gas. Nest Protect tells you where it’s hiding.
A light in the dark.
Pathlight turns on like a night light when you walk near the Nest Protect, and turns off when you walk away.
Every second counts.
The Split-Spectrum Sensor looks for both fast- and slow-burning fires.
Hush from the Nest app.
Just burned the popcorn? Quiet the false alarm with your phone, not your dish towel.
10-year life span.
Nest Protect’s sensors are built to last for up to a decade.
Sleep safe and sound.
Nightly Promise emits a quick green glow when you turn out the lights, signaling that the batteries and sensors are working.


About Nest

Based in Palo Alto, California, Nest takes the unloved products in your home and makes simple, beautiful, thoughtful things.




Size and Weight

Speaker Loudness


Light Ring




Connectivity Requirements




What's in the Box

Nest Protect Wired Also Includes:

    • Split-Spectrum Sensor
    • 10-year electrochemical carbon monoxide sensor
    • Heat sensor, ± 1.8ºF (± 1ºC)
    • Humidity sensor, ± 3%RH
    • Occupancy sensor, 120º field of view to 20 feet
    • Ambient light sensor
    • Omnidirectional microphone, 70dBA SNR
    • Height: 5.3" (13.5 cm)
    • Width: 5.3" (13.5 cm)
    • Depth: 1.5" (3.85 cm)
    • Mass: Nest Protect Battery: 13.9 oz (379 g), Nest Protect Wired: 13.2 oz (375 g)
    • 80dB @ 3 feet (1 m) @ 1kHz
    • 85dB SPL @ 10 feet (3 m)
    • RGB color ring with 6 LEDs
    • Out of the box - US: English, Spanish, Canada: English, French
    • Downloadable - English, French, Spanish, Dutch
    • Working Wi-Fi connection: 802.11 b/g/n @ 2.4GHz
    • Wireless interconnect: 802.15.4b/g/n @ 2.4GHz
    • Bluetooth Low Energy (BLE)
    • Nest Protect Battery
      • Six long-life batteries (Energizer® Ultimate Lithium “L91” AA)
    • Wi-Fi connection
    • Phone or tablet with iOS 8 or later, or Android 4 or later
    • Free Nest account
    • The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4ºC) or exceeds 100ºF (38ºC).
    • Humidity range: 20%RH to 80%RH (non-condensing).
    • 2-year limited warranty. For help, visit Our support team is also available by phone 24/7.
    • Nest Protect has been tested to comply with safety standards UL 2034, UL 217and NFPA-72 set out by UL and California State Fire Marshal.
    • Nest Protect
    • Batteries
    • Backplate
    • Four screws
    • User’s Guide
    • Welcome Guide
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