GPS Tracker TK-104 User Manual page 15

IX. LED indicator status
LED Indicator
Power LED
(Red & Green light)
GSM LED（Green） Flash fast, 1S/times
GPS LED（Blue）
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Green LED flash
Red LED flash
Red LED is on constantly
Green LED is on constantly
OFF
Flash slow, 3S/times
Flash
ON
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MSN: sales@zhyichina.com
Status
Normal
Low power
Charging
Charging finished
Searching for GSM network
GSM Mode
GPRS Mode
No GPS reception
Good GPS reception