Supmeter BST100-E81 - 6. Function&Operation; 6.1 Main Display Interface

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3.3 State Indication
LED Lamp Description
[RUN]
ON: Weighing state.
OFF: Stopping state.
[AUTO]
Feeding control mode:
ON: Auto [PID].
OFF: Manual.
[EXT]
Flow Set Mode:
ON: External [AI: 4~20mA].
OFF: Internal.
[ALARM] Alarm.
[LOCK]
ON: Key-locked.
OFF: Key-unlocked.