Nest Protect, 2nd Gen, Multi-Sensor ‘Smart’ Smoke / CO Alarm, 120VAC

Original price was: $159.95.Current price is: $149.99.

Nest Protect, 2nd Gen, Multi-Sensor ‘Smart’ Smoke Alarm, 120VAC

  • Split-Spectrum Smoke Sensor
  • 10 Year Electrochemical Carbom Monoxide Sensor
  • Occupancy (120° field of view up to 6 m [20 ft])
  • Ambient light
  • Accelerometer
  • Microphone
  • Temperature
  • Humidity
  • Battery Back-Up (3xAA Batteries Included)

Product Documents

Product Documents

Out of stock


It’s time to expect more from your smoke alarm.

Nest Protect has been redesigned from the inside out. It has a Split-Spectrum Sensor, tests itself automatically and lasts up to a decade. It’s also the first home alarm you can hush from your phone without any extra hardware required. And it tells you what’s wrong and can even alert your phone.

Meet the Nest Protect. The smoke alarm other alarms look up to.

Thinks, before it speaks.

Nest Protect has a friendly human voice that gives you an early warning. That way you can handle burning toast before it becomes a burning toaster.

It’s on your ceiling.
And on your phone.

App Silence: Hush alarms with your phone, not your dish towel. If everything’s under control and there’s only a little smoke, quiet down the alarm from the Nest app.

In the 1970s, it would take about 30 minutes for a fire to take over a room. Today, it can take less than 5.

Over 1,000,000 homes in the US experience high levels of carbon monoxide every year.

Thoughtful, not annoying.

Tests itself:You’re supposed to test smoke alarms monthly. But 9 out of 10 people don’t. So Nest Protect checks its batteries and sensors over 400 times a day. And it’s the first alarm that uses Sound Check to quietly test its speaker and horn once a month.

Count sheep, not chirps.

No one should be woken up by a low-battery chirp at 2 a.m. When you turn off the lights, look for a quick green glow. That’s our Nightly Promise. It means all your Nest Protects have tested themselves, the batteries are good, and there won’t be any chirps. Sweet dreams.

Additional information

Weight .400 kg
Dimensions 14 × 14 × 4 cm
Detection Style

Carbon Monoxide (CO), Split Spectrum Smoke Sensor

Additional Sensors

Ambient Light, Temperature, Humidity, Accelerometer, Microphone



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