Nest Protect Wired Smoke & Carbon Monoxide Alarm

Nest Protect Wired Smoke & Carbon Monoxide Alarm

SKU: S3003LWES Category:

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Nest Protect Wired Smoke and Carbon Monoxide Alarm (White, 2nd Generation) S3003LWES

Help safeguard your home with the white Protect Wired Smoke and Carbon Monoxide Alarm from Nest. This alarm features a wired installation and it wirelessly interacts with your Android and iOS smart devices using the free Nest app. Wireless communication is achieved thanks to its built-in Wi-Fi and Bluetooth connectivity. The Nest Protect is designed to detect fast-burning fires, smoldering fires, and carbon monoxide. It produces an audible alert when action is required, and it can be conveniently silenced from your smart devices.

Smart Device Alerts

The Nest Protect sends a message when there’s a problem or when the batteries are running low

Split-Spectrum Sensor

The Split-Spectrum sensor looks for both fast and slow-burning fires

Hush From the Nest App

Silence false alarms with your smartphone or tablet

Tells You What and Where

The Nest Protect speaks up if there’s smoke or CO and tells you where it is, so you’ll know what to do next

Nightly Promise

Nightly Promise is a quick green glow from the Nest Protect when you turn out the lights, informing you that everything’s working well.

Pathway Light

Usually the Nest Protect has its light turned off, but when you walk underneath it, Pathlight can lighten darkened areas

10-Year Life Span

The sensor in the Nest Protect is designed to last approximately 10 years

Additional Features

  • Includes three AA backup batteries
  • Voice alarms with custom location
  • Phone alerts (low-battery, smoke, carbon monoxide, sensor failure)
  • Safety checkup
  • Heads-up alerts
  • Sound check
  • Self test
  • Steam check
  • Wireless interconnect
  • Safety history
  • Home report
  • Emergency shutoff with the optional Nest Learning Thermostat
  • Emergency clip record with the optional Nest Cam



Wireless Working Wi-Fi connection: 802.11 b/g/n at 2.4 GHz
Wireless Interconnect: 802.15.4 b/g/n at 2.4 GHz
Bluetooth Low Energy (BLE)
Sensors Split-Spectrum Sensor, 450 nm and 880 nm wavelength
10 year electrochemical carbon monoxide sensor
Heat sensor, ± 1.8°F (± 1°C)
Humidity sensor, ± 3% RH
Occupancy sensor, 120° field of view to 20'
Ambient light sensor, 1-100k Lux Dynamic Range
Omnidirectional microphone, 70 dBA SNR
Audible Indicator Speaker: 2 W, 80 dB at 3' (1 m) at 1 kHz
Horn: 85 dB SPL at 10' (3 m)
RGB color ring with 6 LEDs
Languages United States: English, Spanish
Downloadable: English, French, Spanish, Dutch
Requirements Wi-Fi connection
Phone or tablet with iOS 8 or later, or Android 4 or later
Free Nest account
Certification and Compliance Underwriters Laboratories Inc.
California State Fire Marshal
UL 2034 - Single and multi station carbon monoxide alarms
UL 217 - Single and multi station smoke alarms
NFPA-72 - National fire alarm and signaling code
Environmental Installed Environment Temperature Range: 40 to 100°F (4 to 38°C)
Relative Humidity Range: 20 to 80% (non condensing)
Dimensions (HxWxD) 5.3 x 5.3 x 1.5" / 13.5 x 13.5 x 3.9 cm
Weight 13.2 oz / 375.0 g


Packaging Info
Package Weight 1.85 lb
Box Dimensions (LxWxH) 6.3 x 6.3 x 2.8"


Weight 1.85 lbs

Battery, Wired


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Our products can be returned within 7 days of the original purchase of the product. A new product may be exchanged for another product or returned for a refund.
To be eligible for a return, please make sure that:
-The product was purchased in the last 7 days
-The product is in its original packaging
-The product is not used or damaged
-You have the receipt or proof of purchase
-You obtained a Return Merchandise Number (RMN) from us
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