MIDLAND Geopoint Voice LCD - Manual (Page 36)

Safety Instructions
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Tracker Management by SMS
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The SMS message structure of the Alarm SMS function is described here below:
GEO Tracker type.
ID:−−−−−− Tracker name preset by the user through the provided software.
LOW BATTERY Alarm message.
−−/−−/−− −−:−− Event date and time (yy/mm/dd hh:mm).
Reading and Writing SMS Commands
The SMS commands allows to set or read some tracker settings. These messages can be sent by a mobile
phone or by a GSM device able to send/receive SMS (i.e. a GSM modem).
When the tracker is switched ON and there is GSM signal, it can receive any SMS command. If the tracker
receives a correct SMS command, an answer is sent to the SMS command sender.
If the message contains invalid characters, the tracker will not reply. If it contains invalid values, the tracker
will reply a message containing “COMMAND ERROR“. All commands start with the letter “r” (reading) or
“w” (writing).
Ensure that the SMS commands are written exactly as shown in the table. Any
change (space, capital letter, small letter,...) could affect the recognition of
the command.
Before enabling the sending of position SMS in cyclic mode (wposc), ensure
that the SMS phone number has been programmed.