Nest Protect 2nd generation technical specifications

These are the system requirements and technical specifications for the 2nd-generation Nest Protect.

                                                  

	2nd-gen Nest Protect (battery)	2nd-gen Nest Protect (wired)
External button and connector	Nest button	Nest button 230 V AC power connector
Weight	379 g (13.9 oz)	375 g (13.2 oz)
Power	Six long-life batteries (Energizer Ultimate Lithium L91 AA)	230 V connector Backup battery: three long-life backup batteries (Energizer Ultimate Lithium L91 AA)
In the box	Nest Protect Back plate Mounting screws User guide Safety, warranty and regulatory guide Welcome Guide Six long-life batteries (Energizer Ultimate Lithium L91 AA)	Nest Protect Back plate Mounting screws User guide Safety, warranty and regulatory guide 230 V AC connector Three connector blocks Three long-life backup batteries (Energizer Ultimate Lithium L91 AA)
Colour	White
Size	Height: 13.4 cm (5.3") Width: 13.4 cm (5.3") Depth: 3.85 cm (1.5")
Languages	Languages available on the Nest Protect
Sensors	Split-Spectrum Sensor 10-year electrochemical carbon monoxide sensor Temperature Humidity Occupancy (120° field of view up to 6 metres (20 feet)) Ambient light Accelerometer Microphone Learn more *from date of manufacture
Speaker	2-watt speaker
Siren	85 dB SPL at 3 m (10 feet)
Light ring	6-RGB colour ring
Wireless	802.11b/g/n (2.4 GHz) Wi-Fi 802.15.4 (2.4 GHz) Bluetooth low energy
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 UL UK to comply with European standards. Nest Protect complies with all the following smoke and carbon monoxide alarm standards: EN 14604:2005 – Smoke alarm devices. EN -14604:2005 – Smoke alarm devices. EN 50291-1:2018E – Electrical apparatus for the detection of carbon monoxide in domestic premises. EU Declaration of Conformity
Operating	Ambient: Temperature 4.4°C to 37.8°C (40°F to 100°F) Humidity Up to 90% RH unpackaged Pressure Up to 3,000 m (10,000 ft) altitude
Storage	Ambient: Temperature -20°C to 45°C (-4°F to 113°F) Humidity Up to 80% RH in packaging Pressure Up to 4,500 m (15,000) ft altitude
Green	Contains no hazardous substances RoHS compliant REACH compliant Recyclable packaging Learn more at sustainability at Google