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Interface
LED Indicator status
Red
LED
On
Power on
x
Off
Power off
Green
LED
On
System ready,
Micro SD card
normal, and has
schedule
Blinking
System and Micro
SD card normal,
but doesn’t have
schedule
Off
System not
ready or Micro
SD card
abnormal
Yellow
LED
On
Battery charging
Blinking
Running out of
battery, please
charge it
Off
Battery not
charging