What you'll see and hear from Nest Protect

Google Nest Protect speaks and lights up so you don't have to guess what it's trying to tell you. You'll also get an alert on your phone or tablet (as long as your Protect has a working Wi-Fi connection). Alerts are saved in the Nest app in Messages. If you ever need to review them, just click or tap on the Messages icon in the Nest app home screen.

Here’s what you can expect to see and hear from your Protect, what the lights and messages mean, and what you should do when you see and hear them.

During setup

Protect will guide you through the setup process using its blue light ring and voice.
WHAT YOU HEAR WHAT YOU SEE ON NEST PROTECT WHAT IT MEANS WHAT TO DO

"Hi."

Listen to it now

Blue pulses

Nest protect glow blue image.

Nest Protect is ready for setup.

Protect will walk you through the setup steps.

How to install Nest Protect

Manually testing Nest Protect

WHAT YOU HEAR WHAT YOU SEE ON NEST PROTECT WHAT IT MEANS WHAT TO DO

"Press to Test."

Listen to it now

Blue pulses

Nest protect glow blue image.

After you press the center button, Protect pulses blue to indicate that it will test its sensors, batteries, Wi-Fi connection and interconnection with other Protects.

2nd gen Nest Protects will also run Sound Check on their horn and speaker.

Protect will tell you when the test is complete and what the results of the test were.

How to test Nest Protect

Heads-Up and Emergency Alarms

Protect uses its voice to let you know about potential danger and where in your home it's located. It also sends an alert to your phone or tablet as long as it is connected to Wi-Fi and the Internet.

Protect first gives you an early warning when it detects that smoke or carbon monoxide levels are rising. This is what we call Heads-Up. If the smoke or carbon monoxide levels are at critical levels, Protect will sound the alarm, pulse red and let you know where the problem is

WHAT YOU HEAR

WHAT YOU SEE ON NEST PROTECT WHAT YOU SEE ON YOUR MOBILE DEVICE

WHAT IT MEANS  AND WHAT TO DO

"Heads-Up. There's smoke in the (room name). The alarm may sound."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Heads-Up: There's smoke • (room name)

Smoke levels are rising.

Put out the source of the smoke. Then use the app or press the center button to silence the alert.

"Heads-Up. There's carbon monoxide in the (room name). The alarm may sound."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Heads-Up: There's carbon monoxide • (room name)

Carbon monoxide levels are rising.

Open a window or door to get some fresh air. Then use the app or press the center button to silence the alert.

"(Smoke or carbon monoxide) alarm silenced."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Alarm silenced. The alarm will sound again if the problem continues.

You have silenced the alarm temporarily.

Make sure you are safe and put out the source of the smoke or carbon monoxide.

(Alarm Sound) "Emergency. There's smoke in the (room name)."

Listen to it now

Red pulses

Nest Protect with pulsing red ring

Emergency: There's smoke • (room name)

The smoke in the room has reached emergency levels.

Get out of the house immediately.

What to do if Nest Protect detects smoke

(Alarm Sound) "Emergency. There's carbon monoxide in the (room name). Move to fresh air."

Listen to it now

Red pulses

Nest Protect with pulsing red ring

Emergency: There's carbon monoxide • (room name)

The carbon monoxide in the room has now reached emergency levels.

What to do if carbon monoxide is detected

  1. Press the center button to silence or reset Protect.
  2. Call your fire department or 911.
  3. Move everyone to fresh air.
  4. Do not re-enter the premises until the emergency services tell you to.

"(Smoke or carbon monoxide) alarm silenced."

Listen to it now

Red pulses

Nest Protect with pulsing red ring

Alarm silenced. The alarm will sound again if the problem continues.

You have silenced the alarm temporarily.

What to do in case of a smoke alarm

What to do in case of a CO alarm

"The smoke alarm is over in the (room name)."

Listen to it now

Green pulses

Nest protect with pulsing green ring

Smoke clearing • (room name) The smoke level is decreasing.

Conditions are returning to normal.

Make sure you're safe and have put out the source of smoke.

"The carbon monoxide alarm is over in the (room name)."

Listen to it now

Green pulses

Nest protect with pulsing green ring

Carbon monoxide clearing • (room name) The carbon monoxide level is decreasing.

Conditions are returning to normal.

Make sure you're safe and have dealt with the source of the carbon monoxide.

Disclaimer: In Australia, the light ring may illuminate only on the Protect that detects smoke or carbon monoxide, but interconnected Protects will still sound an alarm.

Note: Protect will only speak the room name if you selected one of the standard names from the list during setup, or if you chose a standard name and added a custom label. If you use a custom name, your Protect will not speak a room name.

Learn more about Nest Protect names and labels 

When Protect needs your attention

If a problem has been identified during Self Test, Protect uses its yellow light to communicate that it requires your attention. As with Heads-Up and Emergency Alarms, Protect will also send an alert to your phone or tablet as long as it's connected to Wi-Fi and the Internet. It may be that its batteries are getting low, its sensors have failed or Protect is about to expire.

Battery chirps and expiration chirps

Protect will continuously chirp when it’s batteries are critically low and when it has expired.  This acts as a reminder to you to take action (and is required in order to comply with safety regulations). In both of these situations, Protect will chirp continuously until the issue has been taken care of. However it uses different chirp patterns depending on what’s going on.

  • Low battery: You’ll hear 1 chirp every 60 seconds until you replace the batteries.
    • To stop the chirping, you need to replace the batteries with Energizer Ultimate Lithium AA (L91) batteries.
  • Protect has expired: Just like any electrical appliance, smoke and carbon monoxide alarms wear out over time and expire. You’ll hear a double chirp once a minute. You won’t be protected from smoke or carbon monoxide if you don't replace your Protect when it expires.
    • Note: Protect will let you know it's going to expire a few months before the expiration date. You’ll receive a series of messages during that time to remind you to replace it. 
WHAT YOU HEAR WHAT YOU SEE ON NEST PROTECT WHAT YOU SEE ON YOUR MOBILE DEVICE WHAT IT MEANS AND WHAT TO DO

"The battery is low in the (room name). Replace the battery soon."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Low battery (home name: Protect location).

The battery is low. Replace the battery soon.

Your Protect will need new batteries in the coming months.

Protect batteries (or backup batteries for Protect Wired) are low.

Replace Protect batteries soon.

Learn more

"The battery is very low in the (room name). Replace the battery now." Single chirp every 60 seconds.

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Replace the battery now. (home name: Protect location).

Your Protect needs new batteries immediately. Only a few days of battery life remain.

Protect will start chirping soon — day and night.

Protect batteries are very low. It will chirp.

Replace Protect batteries now.

Learn more

"The sensors have failed in the (room name). Replace Protect now."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Smoke sensor failure (home name: Protect location).

The Protect's smoke sensor has failed.

Protect has tested its smoke sensor and a problem has been detected.

Clean your Protect according to the instructions.

How to clean Nest Protect

If the problem persists, replace it. If you’re in the US, you can send your old Protect back to Google for recycling.

When to replace your Nest Protect

Recycle your Nest Protect

"The sensors have failed in the (room name). Replace Protect now."

Listen to it now 

Yellow pulses

protect 2nd gen yellow ring

Carbon monoxide sensor failure (home name: Protect location).

The Protect's carbon monoxide sensor has failed.

You need to replace Protect.

Protect has tested its CO sensor and a problem has been detected.

Replace your Protect now. If you’re in the US, you can send your old Protect back to Google for recycling.

When to replace your Nest Protect

Recycle your Nest Protect

"Nest Protect has expired. Replace Nest Protect now."

Two chirps every 60 seconds.

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

 

Nest Protect has expired per safety regulations. Replace your Nest Protect now.

When to replace your Nest Protect

"Nest Protect is disconnected from the Internet."

Listen to it now

Yellow pulses

protect 2nd gen yellow ring

Protect is offline.

Protect is no longer connected to the Internet.

Check your Wi-Fi network and Internet connection.

"The sensors have failed."

Listen to it now

No lights

There is a problem with the light ring.

Protect's light ring no longer works.

Replace your Protect now.

When to replace your Nest Protect

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