OBD port,No installation

4G Network：4G positioning is faster and more accurate.Sinotrack ST-902L obd gps tracker include 2G and 4G network.Automatically switch to 2G network positioning when the signal is not good, no need to worry about network issues affecting your positioning.When the data flow is exhausted, you can also send a SMS command of 6690000 to the device to obtain SMS location Immediate Alerts: Real time online OBD port car GPS tracker support text message alerts for movement , speeding , leaving, shocking and low battery, etc . Unlimited GPS tracking historical data saved during service. Track from anywhere using free GPS tracking mobile app/web system with real-time text message alerts Plug-in and Use: SinoTrack ST-902L GPS tracker car device build in battery, can use at least 2 hours，when the engine starts will charging, no worry outage. OBD mini GPS tracker super easy to use, no installation, no wiring harness, simply plugs into OBD-2 port. OBD-II tracker is 16-pin standand interface, can be use of most of cars