Xexun TK-102 User Manual - page 10
Send SMS imei+password to the unit to check the IMEI number.
5.15 SOS button
Press the SOS for 3 second, it will send “ help me !+ Geo-info” to all the authorized numbers
every 3 minutes. It will stop sending such a SMS when any authorized number reply SMS ”help
me!” to the tracker.
5.16 Low battery alert
It begins to alert when it is 3.7V and sends you SMS in 30m interval.
SMS format: low battery+Geo-info.
5.17 Hidden number tracking
When a hidden authorized number calls the tracker, the tracker will reply SMS with the hidden
number&Geo-info to all the authorized numbers.
5.17.1 Send SMS “hide number” to set up the hidden number.
5.17.2 Send SMS “nohide number” to delete the hidden number.
5.18 SMS center
5.18.1 Send SMS adminsms+password+space+cell phone number to set the SMS center.
If the SMS center is set up, when an authorized number sends SMS to the tracker, the tracker
will reply a SMS with Geo-info & authorized number to SMS center.
5.18.2 Send SMS noadminsms+password to cancel the SMS center.
Response SMS format: authorized number+Geo-info
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