1 RED Power supply 8-45V DC
2 BLACK Ground
3 GREEN
ACC detection, when key-in and turn to ACC position,
ACC goes level high.
4 YELLOW Relay control driving signal
Please use 12V RELAY in 12V system, use 24V RELAY in 24V system like
bus and truck.
3.4 Status Indication
No LED Color Status Descriptions
1 RED Light GSM work normal
Blink No GSM signal
2 BLUE Light
GPRS connected to the
server.
Blink GPRS connection failed.
3 YELLOW-GRE
EN
Light GPS fixed.
Blink GPS searching.
Note
The LEDs will light up about 5 minutes, then turn off to save power, if
you want to check the status, just call the phone number of the device.
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