Note: This documentation refers to Gravio 3.8 or older. For Gravio 4 or newer, please refer to the respective documentation on doc.gravio.com .
Symptom
Explanation
Remedy
Comments
Energy harvesting door/contact sensor not reacting
The sensor may have run out of battery
Put the sensor into direct sunlight for a few hours. You can also see if the sensor connects to the dongle if a light flashes up at the dongle if you put the magnet next to the sensor.
The sensor also emits a regular signal every few hours with the current status (open/close) to indicate it’s “still alive”
