Troubleshooting and light patterns for Ring Smoke and CO Listener (2nd Gen)

Ring Smoke and CO Listener (2nd Gen) listens for the alarm sounds from your existing smoke and CO detectors and alerts you through the Ring app. Use this article to troubleshoot common issues and identify LED light patterns.

Troubleshooting

Issues scanning the QR code

Make sure your mobile device operating system (OS) is up to date.
Make sure the camera lens on your mobile device is clean and free of debris.
Make sure the QR code on Smoke and CO Listener (2nd Gen) is not damaged, dirty, or covered in debris. Wipe it with a damp cloth or paper towel if needed.
Make sure there is proper lighting in the room. If the room is dark, turn up the lights or move to a more well-lit area.
If the in-app QR scan continues to fail, use your mobile device's native camera to scan the QR code. This will open the Ring app with the QR code already scanned.
If these steps do not resolve the issue, contact Ring Customer Support.

Resolve software update failures

Update your mobile device OS. Software updates use Bluetooth Low Energy (BLE) and require a current OS version.
Stay within one to five feet of Smoke and CO Listener (2nd Gen) during the update. BLE is short-range.
Install fresh batteries. If Smoke and CO Listener (2nd Gen) was previously set up, replace the batteries and try again.
Power cycle Smoke and CO Listener (2nd Gen): Remove the batteries, wait 10 seconds, re-insert them, and try again.
If the issue persists, contact Ring Customer Support for further assistance.

Smoke and CO Listener (2nd Gen) is stuck in Waiting to Join

If Smoke and CO Listener (2nd Gen) remains in a Waiting to Join state for five minutes or more:

Make sure Smoke and CO Listener (2nd Gen) has fresh batteries. If Smoke and CO Listener (2nd Gen) is new, the batteries should be fully charged. If it was previously set up, replace the batteries and try again.
Power cycle Smoke and CO Listener (2nd Gen): Remove the batteries, wait 10 seconds, re-insert them, and try again.
Factory reset Smoke and CO Listener (2nd Gen): Hold down the the

pinhole reset button.
If you have a supported Sidewalk bridge or gateway nearby, move Smoke and CO Listener (2nd Gen) closer to it.

Smoke and CO Listener (2nd Gen) goes offline

If Smoke and CO Listener (2nd Gen) shows as offline in the Ring app:

Make sure Smoke and CO Listener (2nd Gen) has fresh batteries. Replace the batteries and try again.
Power cycle Smoke and CO Listener (2nd Gen): Remove the batteries, wait 10 seconds, re-insert them, and try again.
If the issue persists, contact Ring Customer Support.

Smoke and CO Listener (2nd Gen) does not detect smoke or CO detector sounds

If you are running a test after Smoke and CO Listener (2nd Gen) is already set up, always put your Ring Alarm into Test Mode first. A CO signal that goes through your Ring Alarm as a live signal might trigger a response from your monitoring center.
Make sure Smoke and CO Listener (2nd Gen) is within three to five inches of the smoke or CO detector.
Make sure there are no physical obstructions between Smoke and CO Listener (2nd Gen) and the detector.
Test your smoke or CO detector by pressing its test button. Confirm Smoke and CO Listener (2nd Gen) responds.
Make sure the detector sound pattern is a standard T3 (smoke) or T4 (CO) pattern. Non-standard patterns might interfere with detection. Try moving Smoke and CO Listener (2nd Gen) to a different position around the detector.

Key reminders

The device serial number (DSN) is on Smoke and CO Listener (2nd Gen) label and under the batteries. Remove the batteries to access the DSN if the label is not visible.
Smoke and CO Listener (2nd Gen) listens for alarm sounds from your existing smoke and CO detectors. It does not detect smoke or CO directly.
The setup button is on the front of Smoke and CO Listener (2nd Gen), not on the side as in the previous generation.
Place Smoke and CO Listener (2nd Gen) within three to five inches of your existing smoke or CO detector for best results.
Always put your Ring Alarm system into Test Mode before running a test after setup.
Non-standard alarm sound patterns might interfere with detection.
Smoke and CO Listener (2nd Gen) is not a standalone smoke or CO detector.
Keep Smoke and CO Listener (2nd Gen) away from areas with strong airflow or background noise.
Test Smoke and CO Listener (2nd Gen) after setup by pressing the test button on your existing smoke or CO detector.

Light patterns

Startup: Green, blinks twice rapidly

Smoke and CO Listener (2nd Gen) is starting up.

Animation of green LED blinking twice rapidly on Smoke and CO Listener during startup.

Setup mode: Green, blinking slowly

Smoke and CO Listener (2nd Gen) is in setup mode and ready to connect to your network. This lasts up to 10 minutes.

Animation of green LED blinking slowly on Smoke and CO Listener in setup mode.

Successful setup and update: Green, solid (three seconds)

Smoke and CO Listener (2nd Gen) has been set up or updated successfully.

Animation of green LED solid on Smoke and CO Listener after setup complete and OTA update successful.

Setup timeout: No LED

Smoke and CO Listener (2nd Gen) was not set up within the time limit. The LED turns off.

Animation of No LED on Smoke and CO Listener.

Factory reset in progress: Green, blinking rapidly

Smoke and CO Listener (2nd Gen) is performing a factory reset. Continue holding the setup button for 10 seconds.

Animation green LED blinking rapidly on Smoke and CO Listener during factory reset.

Factory reset complete: Red, solid (one second)

Smoke and CO Listener (2nd Gen) has been reset successfully and will reboot into setup mode.

Animation of Red LED solid on Smoke and CO Listener after factory reset complete

Network disconnected: No LED

Smoke and CO Listener (2nd Gen) is not connected to the network. There is no LED behavior.

Post registration reboot: No LED

Smoke and CO Listener (2nd Gen) is rebooting after registration. There is no LED behavior, but Bluetooth Low Energy (BLE) remains active for up to five minutes.

Update mode: Green, blinking slowly

Smoke and CO Listener (2nd Gen) is in update mode and ready to receive an update. Press the setup button or send a cloud command to begin. This lasts up to five minutes.