1 Command Format

1.1 GPRS Command Format

 GPRS command sent from the server to 

the tracker:

@@<Data identifier><Data length>,<IMEI>, 

<Command type>,<Command><*Checksum>

 GPRS command sent from 

the tracker to the server:

$$<Data identifier><Data length>,<IMEI>, 

<Command type>,<Command><*Checksum>

1.2 Tracker Command Format

$$<Data identifier><Data length>,<IMEI>,

<Command type>,<Event code>,

<(-)Latitude>,<(-)Longitude>,<Date and time>,

<Positioning status>,<Number of satellites>,

<GSM signal strength>,<Speed>,<Direction>,

<Horizontal dilution of precision (HDOP)>,

<Altitude>,<Mileage>,

<Run time>,<Base station info>,

<I/O port status>,<Analog input value>,

<Geo-fence number><*Checksum>

Example

GPRS Sending

@@Q25,353358017784062,A10*6A

GPRS Reply

$$Q128,353358017784062,AAA,34,22.543176,

114.078448,100313093738,A,5,22,2,205,

5,-14,0,60,0|0|10133|4110,0000,

149|153|173|2707|914,*91