The smoke alarm that others look up to.
Nest Protect is a smoke and carbon monoxide alarm with a split-spectrum smoke sensor to detect both fast- and slow-burning fires.
It can send an alert to your phone, speak to you and even light the way in the dark.
Nest Protect
It tells you what the danger is and where it is.
The Split-Spectrum Sensor looks for both fast- and slow-burning fires. It also has a 10-year CO sensor so that it can tell you where poisonous, invisible CO is hiding. And all your Nest Protects speak up at the same time to tell you what's wrong and where the problem is.
Thoughtful, not annoying.
Nest Protect checks itself over 400 times a day and lets you know if something is wrong. It also has Steam Check, so a nice, relaxing shower shouldn’t cause your alarm to shout at you. And Pathlight, so it can light your way at night.
You’ll know, from anywhere.
Nest Protect can alert your phone when something is wrong at home. You’ll receive a message if the alarm goes off, if the batteries start to run low or if a sensor isn’t working. And you can silence your Nest Protect using the Nest app.
Technical specifications
Power
  • Battery
  • Six long-life AA
  • Energizer® Ultimate
  • Lithium batteries
Colour
White
Features
  • Nest app – Mobile alerts include:
        - Low battery
        - Smoke & carbon monoxide
        - Sensor failure
  • Split-spectrum smoke sensor
  • Voice alarms with custom location
  • Silence the alarm from the app
  • Carbon monoxide sensor
  • Has a product lifetime of up to 10 years
  • Heads-Up and Emergency Alerts
Languages
  • Pre-installed languages, by country
  • Italy, Spain: Italian, Spanish
  • Germany, Austria: German, French
  • United States: English, Spanish
  • Canada: English, French (Québécois)
  • United Kingdom: English (UK)
  • France, Belgium and the Netherlands: French, Dutch
  • Sweden, Finland: Swedish, Finnish
  • Norway, Denmark: Norwegian, Danish

  • After setup, you can change the language that
  • Nest Protect speaks to any of the languages above.
Sensors
  • 10-year electrochemical carbon monoxide sensor
  • Heat sensor, ± 1 ºC (1.8 ºF)
  • Humidity sensor, ± 3% RH
  • Occupancy sensor, 120º field of view to 6 m
  • Ambient light sensor, 1–100,000 lux dynamic range
  • Omnidirectional microphone, 70 dBA SNR (for Sound Check only)
Speaker, siren and light ring
  • Speaker: 80 dB at 1 metre
  • Siren: 85 dB SPL at 3 metres
  • RGB colour ring with 6 LEDs
Size and weight
  • Height: 13.4 cm
  • Width: 13.4 cm
  • Depth: 3.9 cm
  • Mass: 379 g
Connectivity requirements
  • Wi-Fi connection
  • Requires a web browser, or a compatible phone or tablet with the free Nest app and Bluetooth 4.0.
Wireless
  • Wi-Fi connection: 802.11b/g/n @ 2.4 GHz
  • Wireless Interconnect: 802.15.4 @ 2.4 GHz
  • Bluetooth low energy (BLE)
Certification
  • The 2nd-generation Nest Protect has been tested by UL to comply with European, US and Canadian safety standards. Nest Protect complies with all of the following smoke and carbon monoxide alarm standards:
  • EN-14604 – Smoke alarm devices.
  • EN-50291 – Electrical apparatus for the detection of carbon monoxide in domestic premises.
  • EN-50271:2010 – Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen.
  • EN-50292 – Electrical apparatus for the detection of carbon monoxide in domestic premises.
Operating temperature and humidity
  • The alarm should not be installed in locations where the normal ambient temperature is below 4 °C or exceeds 38 °C.
  • Humidity range: 20% RH to 80% RH (non-condensing)
What’s in the box
  • Nest Protect (Battery)
  • Six long-life batteries
  • Back plate
  • Four screws
  • User’s Guide and Welcome Guide
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