Newest 12V/24V GPS Tracker with 2 Way Commucation

1. A built-in GPS vehicle location.
2. To 4 frequency GSM 900/1800 MHz. (850/1900 optional). Can work around the globe!
3. High sensitivity, new technology and latest GPS chipset!
4. Even in the weak state of the signal can be very well positioned.
5. With a monitoring function, automatic answer.
6. OverSpeed alarm function.
7. Support a single location and continuous tracking.
8. With a built-in battery can power failure alarm.
9. Support the default three phone numbers, can be two-way conversation.
10. Support queries via SMS and the Internet location.
11. By the mobile phone via SMS to find positioning holders.
12. SOS button send the exact location information to an immediate rescue / action.
13. With electronic fence can be set to at least 100 meters.
L4. (Fuel Control) support function and power off the oil off the oil power recovery.
15. Lead lead to a total of five lines, respectively, red power +12 V, black GND, yellow external SOS line, white power off oil, green ACC