Nest Protect technical specifications

Here are specific details about your Google Nest Protect including dimensions, weight, maximum elevation, and more.

2nd gen Nest Protect

Nest protect 2nd gen plus side

	Nest Protect (Battery)	Nest Protect (Wired)
External button and connector	Nest button	Nest button 120V AC power connector
Weight	13.9 oz (379 g)	13.2 oz (375 g)
Power	6 long-life batteries (Energizer Ultimate Lithium L91 AA)	120V connector Backup battery: 3 long-life backup batteries (Energizer Ultimate Lithium L91 AA)
In the box	Nest Protect Backplate Mounting screws User's Guide Safety, Warranty, Regulatory Guide Welcome Guide 6 long-life batteries (Energizer Ultimate Lithium L91 AA)	Nest Protect Backplate Mounting screws User's Guide Safety, Warranty, Regulatory Guide Welcome Guide 120V AC connector 3 wire connectors 3 long-life backup batteries (Energizer Ultimate Lithium L91 AA)
Color	White
Size	Height: 5.3 in (13.4 cm) Width: 5.3 in (13.4 cm) Depth: 1.5 in (3.85 cm)
Languages	Languages on the Nest Protect
Sensors	Split-Spectrum Sensor 10-year electrochemical carbon monoxide sensor* Temperature Humidity Motion (120° field of view up to 20 feet) Ambient light Accelerometer Microphone Learn more *from the date of manufacture
Speaker	2-watt speaker
Horn	85dB SPL at 10 ft (3 m)
Light ring	6 RGB color ring
Wireless	Wi-Fi: 802.11b/g/n 2.4 GHz Wireless Interconnect: 802.15.4 at 2.4 GHz Bluetooth Low Energy (BLE)
Connectivity requirements	Wi-Fi Internet connection Nest app (check requirements) Phone or tablet running iOS or Android with Bluetooth Low Energy (BLE)
Certification	Nest Protect has been tested by Intertek Testing Services to comply with US and Canadian safety standards. Nest Protect complies with all of the following smoke and carbon monoxide alarm standards: UL 2034, 4th Ed. - “Single and Multiple Station Carbon Monoxide Alarms” UL 217, 8th Ed. - “Smoke Alarms” Nest Protect satisfies the requirements of the NFPA-72 - “National Fire Alarm and Signaling Code” when installed in accordance with the User Guide.
Operating	Ambient: Temperature 40° to 100°F (4.4° to 38.8°C) Humidity Up to 90% RH unpackaged Pressure Up to 10,000 ft altitude
Storage	Ambient: Temperature -4° to 113 °F (-20° to 45 °C) Humidity Up to 80% RH in packaging Pressure Up to 15,000 ft altitude
Green	Contains no hazardous substances RoHS compliant REACH compliant Recyclable packaging Learn more at sustainability at Google

1st gen Nest Protect

Nest Protect White

	Nest Protect (Battery)	Nest Protect (Wired 120V)
Color	White
External button and connector	Nest button	Nest button 120V AC connector
Size and weight	Height: 5.28 in (13.4 cm) Width: 5.28 in (13.4 cm) Depth: 1.63 in (4.1 cm) Weight: 13.1 oz (372 g)	Height: 5.28 in (13.4 cm) Width: 5.28 in (13.4 cm) Depth: 1.63 in (4.1 cm) Weight: 12.4 oz (352 g)
Sensors	Photoelectric smoke sensor 7-year Carbon monoxide sensor* Temperature Humidity Motion Ambient light Ultrasonic (Inactive) *from the date of manufacture
Speaker and horn	Speaker: 80dB at 3 ft (1 m) at 1 kHz Horn: 85dB SPL at 10ft (3 m)
Wireless	802.11b/g/n (2.4GHz) Wi-Fi 802.15.4 (2.4GHz)
System requirements	Wi-Fi internet connection Nest app (check requirements) Phone or tablet running iOS or Android with Bluetooth Low Energy (BLE)
Languages	Languages on the Nest Protect
Certification	Nest Protect has been tested to comply with safety standards in the United States set out by: Underwriters Laboratories Inc. California State Fire Marshal Nest Protect complies with all of the following smoke and carbon monoxide alarm standards: 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”
In the box	Nest Protect (Battery) 6 long-life batteries Backplate 4 screws User's Guide, Welcome Guide and Warranty	Nest Protect (Wire 120V) 3 long-life back-up batteries Backplate 4 screws User's Guide, Welcome Guide and Warranty AC 120V connector 3 wire connectors
Operating	Ambient: Temperature 40° to 100 °F (4.4° to 38.8 °C) Humidity Up to 90% RH unpackaged Pressure Up to 10,000 ft altitude
Storage	Ambient: Temperature -4° to 113 °F (-20° to 45 °C) Humidity Up to 80% RH in packaging Pressure Up to 15,000 ft altitude
Green	Contains no hazardous substances RoHS compliant REACH compliant Recyclable packaging Learn more at sustainability at Google

Replacement batteries (Energizer Ultimate Lithium “L91” AA) are available for purchase at your local retailer.

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Nest Protect technical specifications

2nd gen Nest Protect

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