What to do if the sensor LED does not flash after battery installation
The contact sensor and motion sensor do not have a SYNC button. It broadcast itself once a battery is installed.
- Remove the protection film outside the battery and reinstall the battery.
- Read this article and check if the battery is installed correctly.
- Replace a new battery if the old one is low power.
If it is still not working, feel free to contact us via support@nooriolife.com.
Updated on: 19/05/2026