What is the difference between Geo-fence Alarm Report and Track by Distance Report?
After setting Geo-fence waypoints, you can set alarm when the tracker enters or exits the waypoint. While for Track by Distance, the message will be sent only when the moving distance reaches preset value.

I have set Speeding Alarm 100Km/h via command 0000,B07,100 successfully. When the speed was over 100
1. Battery is low. Charge the unit with 12V external power for at least half an hour
2. Make sure GPS gets fix (blue LED flashes 0.1 second on and 2.9 seconds off). If not, please first refer to the question – Blue LED stays 1 second on and 2 seconds off (can’t get GPS fix) after the unit is turned on.
3. SIM card has run out of credit. Please top up the SIM card;
4. The phone number is not authorized and Speeding Alarm event flag haven’t been set. Or the authorized phone number is not correct.

After making a phone call to the unit, no SMS is received.
1. Battery is low. Charge the unit with 12V external power for at least half an hour; 2. Make sure the unit is already connected to GSM network (Green LED flashes 0.1 second on and 2.9 seconds off). If not, please first refer to above question – Green LED stays 1 second on and 2 seconds off (can’t get GSM signal) after the unit is turned on. 3. SIM card has run out of credit. Please top up the SIM card; 4. SIM card doesn’t have function of displaying incoming call number. Use a mobile phone t.

I can’t find the ON/OFF button, how can I turn on the unit?
1. Unscrew and remove the rectangular cover at the back of the unit; 2. Press and hold the ON/OFF button for 3~5 seconds and then both LEDs will flash. Or connect the unit to external power, and then both LEDs will flash. It indicates the unit is on.

I have set Track by Distance with interval 300 meters via command 0000,A14,300 successfully. The uni
1. Battery is low. Charge the unit with 12V external power for at least half an hour; 2. Make sure GPS gets fix (blue LED flashes 0.1 second on and 2.9 seconds off). If not, please first refer to the question – Blue LED stays 1 second on and 2 seconds off (can’t get GPS fix) after the unit is turned on; 3. Make sure that unit have GPS fix when you sent out command 0000,A14,300 and when the unit moved over 300m; 4. SIM card has run out of credit. Please top up the SIM card; 5. The phone num.

The unit can’t connect to server via GPRS.
1. Battery is low. Charge the unit with 12V external power for at least half an hour; 2. Make sure the unit is already connected to GSM network (Green LED flashes 0.1 second on and 2.9 seconds off). If not, please first refer to above question – Green LED stays 1 second on and 2 seconds off (can’t get GSM signal) after the unit is turned on. 3. GPRS tracking settings is not correctly set. For example, if set via SMS command, the format is: 0000,A21,1, 208.109.191.86,8056,CMNET,, In this comm.

If I connect the unit to external power and remove its internal battery, can the unit still work?
Yes, but make sure the external power supply is sufficient, at least 12V/1.5A.