LED: 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 |
ON/OFF button
Provides safe startup and shutdown without disconnecting the supply voltage. Latching pushbutton to switch the main power of the SmartSampler2 on or off.