Offline vs Device Issue
Two states that look similar but mean different things — and require different responses.
Both states indicate the dashboard cannot be trusted for that device, but the cause and the action differ.
Offline
No data has arrived within the expected ingestion window. The hardware may be powered off, disconnected from the network, or out of range of the gateway. Action: check power and network at the device.
Device Issue
Data is arriving, but a sensor is reporting values outside its physical envelope or has flagged a self-test failure. Action: open a ticket — the module likely needs replacement.