Nest Protect

What’s in the box

Nest Protect: 2nd Gen Smoke + CO Alarm
Backplate
Four screws
User guide
Welcome Guide
Six long-life AA batteries (Battery model)
Three long-life backup AA batteries (Wired model)
120 V AC connector (Wired model)
Three wire nuts (Wired model)

Technical Specifications

Dimensions & weight

Dimensions

Length: 13.5 cm (5.3 in)

Width: 3.85 cm (1.5 in)

Height: 13.5 cm (5.3 in)

Weight

Nest Protect Battery: 379.0 g (13.9 oz)

Nest Protect Wired: 375.0 g (13.2 oz)

Colour

White

Sensors

Split‑spectrum smoke sensor

10-year electrochemical carbon monoxide sensor

Temperature

Humidity

Occupancy (120° field of view up to 6 m [20 ft])

Ambient light

Accelerometer

Microphone

Battery

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 (2.4 GHz)

Bluetooth low energy

Operating temperature

The alarm should not be installed in locations where the normal ambient temperature is below 4 °C (40 °F) or exceeds 38 °C (100 °F). Humidity range: 20% RH to 80% RH (non condensing).

Audio

80 dB @ 3 ft (1 m) @ 1kHz

Horn

85 dB SPL @ 3 m (10 ft)

Warranty

Two-year limited warranty

Certification

Nest Protect has been tested to comply with safety standards EN 14604 and EN 50291-1 set out by the European Committee for Standardisation (CEN) and the European Committee for Electrotechnical Standardisation (CENELEC).

External Buttons

RGB colour ring with 6 LEDs

“The smoke alarm other alarms look up to.”

Nest Protect looks for fast-burning fires, smouldering fires, and carbon monoxide. It also speaks up when there’s a problem, can be silenced from a phone when you’re home, and sends a phone alert if you’re gone.