Type: This is a 'Warning' message (Orange highlight).
Source: This originates from the Vector itself.
Symptoms: The device may be operating correctly but it is unlikely in the vast majority of cases.
Cause: The usual case for seeing this message is when a device has been installed on the ceiling but has not been configured at all. Devices that have not been configured will not have a height setting saved - not even an incorrect height setting - and this error message will result.
Fix: To fix this issue, simply connect to the device and configure the main counting functionality. As part of this configuration a valid height will be set.