... and then tracker will report data to platform when GSM signal is available.Two-way communication1. With dispatch ... , temperature, mileage, SOS, over-speed, GPS signal, GSM signal, etc.PrinterPrinter directly connects to tracker and print directly ... vehicle status( engine, door, shock), speed, mileage, direction, GSM signal, GPS signal, Longitude, LatitudeMileage1. mileage statistics, can synchronize ...