To get the most out of Google Home, choose your Help Center: U.S. Help Center, U.K Help Center, Canada Help Center, Australia Help Center

Nest Detect disconnected or offline

If a Google Nest Detect is listed as offline on the Nest app, it has become disconnected from Google Nest Guard. When a Detect is offline it won’t be able to communicate activity in the room it’s in.

Before you begin

The Nest Detects in your home work a little differently than other Nest products do. Detects don’t use Wi-Fi to communicate with the Nest Service. Instead, they talk directly to your Guard. Your Guard then uses Wi-Fi to send alerts and other information to the Nest app on your phone. So even if your home Wi-Fi goes down, your Detects can still tell Guard to sound the alarm (but you won’t get a notification on your phone unless you have a cellular backup).

Here are some things to keep in mind if your Detect is offline:

  • If your Nest Detect can’t reach Nest Guard or Nest Connect, it will appear as “Offline” on the Nest app. 
  • As long as your Detect is offline, it won’t be able to alert Guard when a door or window is opened or closed, or when there’s motion in a room.
  • One Detect being offline won’t affect the rest of the Detects in your home. As long as the other Detects are online and working normally, they’ll continue to sense activity and tell Guard to sound the alarm if needed. 
  • If you’re using a Connect to extend the range of your alarm system throughout your home, some of your Detects might talk to the Connect instead. Your Connect will then talk to your Guard. So if both Connect and Detect appear as offline on the Nest app, you should troubleshoot Connect first.

If your Detect is offline, the steps below will help you troubleshoot.

If you’re having trouble with something else like adding your Detect to your account, refer to this link:

Troubleshoot other Wi-Fi and connection issues

Troubleshoot Nest Detect offline

1. Make sure your Guard is online 

Since Detect needs Guard to connect to the internet, check that your Guard is online and in range of your Detect.

If Guard is offline, the Nest app will tell you. Refer to the following link to help get it back online:

Troubleshoot when Nest Guard is offline on the Nest app

Note: If Guard is offline, then your Detects will also appear as "Offline." Guard can still sound the alarm if any of your Detects senses activity, thanks to the Nest Weave network. But you won’t get an alert on your phone.

2. Check the status of Nest service 

If the Nest service is down, all of your Nest products will be offline. You may also get the message: "The Nest service can’t be reached right now" on the Nest app.

Check the status of the Nest service

Wait for the Nest service to resume to check if your Detect and other Nest products come back online.

3. Check your Nest app version 

Make sure you have the latest version of the Google Home app or Nest app to get the latest features and bug fixes.

Update Android apps 
Update iOS apps 

4. Update your Nest Guard software 

Since your Detects connect to your Guard, make sure your Guard has the latest software. Press and hold the 2 button on your Guard until you get a "Release to check for updates" message.

How to keep your Nest products up to date

5. Check your Detect battery 

Push the button on your Detect.

Your Detect will light up to let you know its status. If everything is okay, your Detect will glow blue or green.

If Detect’s light is yellow, you can use the Nest app to check the battery level the last time your Detect was connected.

How to check if Nest Detect's battery is low

If the battery level is low, replace the battery.

6. Restart your Detect 

Restart your Detect to refresh its connection.

Important: Don't reset your Nest Detect to factory defaults or you’ll have to remove it from your account and add it back again on the Nest app.

After you restart your Detect, check if your Detect is back online on the Nest app. Frequent disconnects are a sign of a poor connection between your Detect and your Guard or Connect.

7. Check the connection range 

An easy way to tell if you have a range issue is to set your system to Off Nest Guard off , unplug Guard, and then temporarily plug it into an outlet closer to the Detect that’s having the problem.

Wait a few minutes.

If your Detect comes back online after you move Guard closer, it means the spot you’ve chosen for your Detect may have been too far away from Guard’s original location.

There are a few ways to fix this issue. Choose the one that works best for you:

  • Move your Guard back to its original spot, uninstall Detect, and then install it somewhere closer to Guard.
  • Keep your Guard in its new location. Just make sure that none of your other Detects go offline after you move Guard.
  • If you want to use your Guard in its original location and keep your Detect where it is, you can always purchase a Nest Connect to help extend the range of your system.

Note: Make sure your Detect is installed correctly and attached to the backplate. If you’re not sure, try to remove it from the backplate and then reattach it.

8. Look for sources of interference 

Even if your Detect is in range of your Guard, something may be interfering with the connection.

Draw an imaginary straight line between your Detect and Guard. Any time the line between your Detect and Guard is blocked by something, it might cause interference.

Thick walls, furniture, appliances, and other electronics can reduce the range your Detect can connect to your Guard.

Try to install your Detect closer to your Guard.

You can also move your Guard closer so it can connect to your Detect, or purchase a Nest Connect to extend the range of your Guard.

9. Reset your Detect to factory defaults 

After you’ve ruled out interference, try to reset your Detect to factory defaults. You’ll need to add your Detect back to your account on the Nest app after.

Important: You should double check the previous troubleshooting steps before resetting your Nest Detect. When you reset your Nest Detect, it will remove all of your settings and history.

If none of the troubleshooting steps mentioned above works for you, you can purchase a Nest Connect to help extend the range of your alarm system throughout your home.

Learn more about Nest Connect

Was this helpful?
How can we improve it?
Clear search
Close search
Google apps
Main menu
Search Help Center