User's Manual

TR-151A page 31
4.5 How to set TR-151A to periodically report its position by
GPRS?
Users can send an SMS by mobile phone to ask TR-151A to periodically report its position via
GPRS network to GPRS server (TR-151A call center).
The format of SMS is as below.
?9,IMEI,Report_Interval,Return_Phone_Number!
The description of SMS
Format Description
?9 Start sign and function code
IMEI IMEI of TR-151A
Report_Interval Time interval of sending data report. The unit is second.
Return_Phone_Number The phone number for receiving OK message.
! End sign
TR-151A will send an SMS whose format is“?9,IMEI,OK!” to the return phone number to confirm
it has received the request. Then it will periodically send the periodical report according to the
report interval.
Example 1: Require 120-sec period report sent to 626123456
You have to enter “?9,355632000166323,120,626123456!
Example 2: Require 180-sec period report sent to 626123456
?9,355632000166323,180,626123456!
Stop GPRS periodical report:
Users can send an SMS to stop periodical report.
The format of SMS is following as:
?2,IMEI,Return_Phone_Number!