2.3 Indicators & Buttons

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.

Related configuration: 7. Diagnostics & Troubleshooting in SmartConfig2.