2.3 Indicators & Buttons
LEDs: Status indicators for power, activity, and fault conditions.
| LED State | Meaning |
|---|---|
| Off | No power supplied |
| Steady on | Powered, in configuration mode (not started yet) |
| Blinking (slow) | Working mode — SmartSampler is running normally |
| Blinking (fast) | Error condition — check configuration, wiring, or load |