... 50 -200 vehicles/personnel. It works with ExtremTrac vehicle trackers, personal trackers, tracking vehicle and personnel simultanuously in real time, ... like cut oil, shut down engine3. SYSTEM PACKAGE: - GPS/GPRS/GSM Trackers: ET700/GP3000/ET3500/MC300, etc- GSM Modem: MD200- Tracking ... , MS MapPoint, Google Earth, Google Earth Plus4. VIDEO LIVE SHOW OF THE SOFTWARE WITH ET700C: Track by Google earth ...