GPS Vehicle Tracker With Anti Jamming

We are offering gps vehicle tracker with anti-jamming and fuel level detection function ev-604
main features: \r1. Real time fuel level detection\r2. Free real-time web online tracking service.\r3. Real time tracking by gps satellite.\r4. Real time tracking by celllocate, location based on cellular network, users are able to track in building, underground and garage etc.\r5. Gsm anti-jamming function.\r6. Sms/web remote control.\r7. Gsm/gprs simultaneously.\r8. Built-in 8mb memory chip. \r9. Reply maps link and car\'s address (city, street, etc by sms).\r10. Geo fencing management.\r11. Gps antenna cut alarm.\r12. Car power lost alarm, low power alarm \r13. Sos panic button for help.\r14. Over speed alarm, movement alarm.\r15. Gps signal lost and recovery alert.\r16. Listen in function.\r17. Two way voice communications.\r18. User defined by sms.\r19. Remote engine/oil cut-off by sms and website. \r20. Inputs detections for door open/close, acc on/off etc\r21. Output: remote lock/unlock door or siren sounding etc.\r22. 3 analog inputs: etc.\r23. Firmware upgrade over the air.