BLT421 Product Manual
1.3 Meaning of LED indicator
Under-voltage alarm: insufficient electrical power.
No power supply: There is no power supply, the connection cable is broken, and the
interface is loose.
The system is operating normally.
Abnormal motor: The current consumption of the motor is too large, and the
mechanical components cannot run smoothly.
The cable is broken, and the interface is loose.
System communication is normal.
System communication is abnormal.
The cable is broken, and the interface is loose.
The readings of each sensor are normal.
There is an abnormal sensor reading.
The cable is broken, and the interface is loose.
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