vehicle gps gprs tracking system

GPStracker for car vehicles truck fleet management GSM 850/900/1800/1900 MHz. Works worldwide! High sensitivity, JRC low power GPS chipset! Two way talking function,ACC detective charging Over-speed alarm,GEO fence,Voice monitoring remotely Support single location and continuous tracking Support alarm, have 3 preset phone number Support check location and real-time and historical trajectory by SMS or Internet SOS button send out exact location for immediate rescue/action. Support cut-off and recoveringelectricity and oil function High reliability circuit design, in line with the automotive electronics industry standards Specification GSM module MTK Case, support 900/1800(850/1900 can option) Support the TCP protocol GPS ChipsetJRC chipsetGPS sensitivity -164dB C/A Code1.023MHz chip rateChannels210 channel all-in-view trackingGPS frequency L1,1575.42MHz GPS Position Accuracy 2.5 meters, CEP GSM Position Accuracy Later will realize Velocity Accuracy 0.1m/s Time Accuracy Synchronized to GPS time Cold Start 35sec.,average Hot Start 1sec.,average Warm Start 25sec.,average Altitude Limit 18,000 meters (60,000feet) max. Velocity Limit 515 meters/second (1000knots) max. Acceleration Limit Less than 4g