Unpair Bluetooth Connection
Visit your mobile device’s Bluetooth settings. Unpair the Shelly device by forgetting the device. The device should be listed as “Shelly BLU Motion” if it is a motion sensor, or “SNDW” followed by a code if it is a door/window sensor.
Remove Battery
Open the sensor cover with a flathead screwdriver and remove the battery.
Reinsert Battery
Reinsert the battery and immediately press the button for 30 seconds. Place the cover back on the sensor.
Re-add to Home
When the factory reset is completed, you will need to re-add the Shelly device to your home through the Brilliant mobile app. You can do this by going to Settings > Works With > Shelly > Add Device. Please note that it may take a few minutes for your Shelly device to appear online again.