If the LED indicator on your eufy Water Sensor, Smoke Listener, or Siren is not blinking, please try the following troubleshooting steps listed in this article to resolve the issue.

1. Check the Battery Installation

Ensure that the battery is installed in the correct orientation. The positive (+) and negative (-) terminals of the battery should match the corresponding + and - markings inside the battery compartment of the Water Sensor, Smoke Listener, or Siren.

2. Replace the Battery

If the battery is correctly installed and the LED indicator is still not blinking, it may be time to replace the battery with a new CR123 battery.

3. Test the Water Sensor/Smoke Listener/Siren

After replacing the battery, please make sure to test the device by triggering it (example: by simulating a water leak if it's a Water Sensor) to verify the device’s LED indicator does blink. This will serve as a confirmation that the device is operating properly.

If the device’s LED indicator still does not blink after following the troubleshooting steps listed in this article, the issue may be more complex and require further troubleshooting to locate the root cause of the issue. In this case, please refer to the user manual for further troubleshooting tips or contact eufy Customer Support Team for assistance.

If you have any other questions, please don't hesitate to reach out to us for further assistance.