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Support Support Start a repair Manage orders Shopping support See all support Pixel Care+ Stores 0 Sign in Sign in with Google Orders Devices Repairs Pixel Care+ Subscriptions My Nest Home Settings Nest Protect 2nd Gen - Installation and Tech Specs - Google Store Nest Protect and CO alarm OverviewTech Specs No longer available Nest Protect and CO alarm No longer available Tech specs Dimensions Length: 5.3 in (13.4 cm) · Width: 1.6 in (3.95 cm) · Height: 5.3 in (13.4 cm) Length: 5.3 in (13.4 cm) Width: 1.6 in (3.95 cm) Height: 5.3 in (13.4 cm) Weight Nest Protect Battery: 13.9 oz (379.0 g) · Nest Protect Wired: 13.2 oz (375.0 g) Nest Protect Battery: 13.9 oz (379.0 g) Nest Protect Wired: 13.2 oz (375.0 g) Color White White Sensors Split‑Spectrum smoke sensor · Electrochemical carbon monoxide sensor (Nest Protect's sensor lasts up to 10 years from the date of manufacture.) · Temperature · Humidity · Occupancy (120° field of view up to 20 feet) · Ambient light · Accelerometer Split‑Spectrum smoke sensor Electrochemical carbon monoxide sensor (Nest Protect's sensor lasts up to 10 years from the date of manufacture.) Temperature Humidity Occupancy (120° field of view up to 20 feet) Ambient light Accelerometer Battery Six long-life AA batteries · Battery model: Six long-life AA batteries (Energizer® Ultimate Lithium “L91”) · Wired model: Three long-life backup AA batteries (Energizer® Ultimate Lithium “L91”) Six long-life AA batteries Battery model: Six long-life AA batteries (Energizer® Ultimate Lithium “L91”) Wired model: Three long-life backup AA batteries (Energizer® Ultimate Lithium “L91”) Wireless 802.11b/g/n (2.4GHz) Wi-Fi · 802.15.4 (2.4GHz) · Bluetooth Low Energy 802.11b/g/n (2.4GHz) Wi-Fi 802.15.4 (2.4GHz) Bluetooth Low Energy Operating Temperature 40ºF (4 ºC) to 100ºF (38 ºC) · The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4 ºC) or exceeds 100ºF (38 ºC). Humidity range: 20%RH to 80%RH (non condensing). 40ºF (4 ºC) to 100ºF (38 ºC) The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4 ºC) or exceeds 100ºF (38 ºC). Humidity range: 20%RH to 80%RH (non condensing). Audio 80 dB @ 3 ft (1 m) @ 1kHz · Speaker loudness: 80 dB @ 3 ft (1 m) @ 1kHz · Horn · 85 dB SPL @ 10 ft (3 m) 80 dB @ 3 ft (1 m) @ 1kHz Speaker loudness: 80 dB @ 3 ft (1 m) @ 1kHz Horn 85 dB SPL @ 10 ft (3 m) Warranty Two-year limited warranty · Two-year limited warranty. For help, visit nest.com/support. Two-year limited warranty Two-year limited warranty. For help, visit nest.com/support. Certification Complies with safety standards set out by UL · Nest Protect has been tested to comply with safety standards UL 2034, UL 217, and NFPA-72 set out by UL and California State Fire Marshal. Complies with safety standards set out by UL Nest Protect has been tested to comply with safety standards UL 2034, UL 217, and NFPA-72 set out by UL and California State Fire Marshal. External Buttons RGB color ring with 6 LEDs RGB color ring with 6 LEDs What's in the box Nest Protect: 2nd Gen Smoke + CO Alarm · Backplate · Four screws · User’s guide · Welcome guide · Six long-life AA batteries (Battery model) · Three long-life backup AA batteries (Wired model) · 120V AC connector (Wired model) · Three wire nuts (Wired model) Nest Protect: 2nd Gen Smoke + CO Alarm Backplate Four screws User’s guide Welcome guide Six long-life AA batteries (Battery model) Three long-life backup AA batteries (Wired model) 120V AC connector (Wired model) Three wire nuts (Wired model) Requirements Wi-Fi connection. · Phone or tablet with iOS 8 or later, or Android 4 or later · Free Nest account. Wi-Fi connection. Phone or tablet with iOS 8 or later, or Android 4 or later Free Nest account. 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