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1. gps and gsm tracking system

o Get current location
o Geo-fencing alarm
o Over speed alert
o Main power lost alert
o Mileage report
o Coordinates-saving function
o Sleeping mode for save power
o Built-in Lithium battery in the AVL, can be charged by exterior ...

2. basic gsm tracking system

o Mobile phone tracking technology relies on the use of triangulation, taking the signal strengths registered from the mobile phone at a minimum of three nearby GSM receiver masts
o Mobile phone companies know the position of each mast and ...

3. GPS tracking system

GPS&GSM vehicle tracker is a vehicle tracking device with build in GPS and GSM modules with compact size. It can transmit the latitude and longitude coordinate to your cell phone by the short message service. Then this information can be entered ...