... your Assets,Use for School bus, logistics project Description: ·Support single location and continual tracking ·Over-speed alarm, Low power alarm, Geo ... /open, detect the status of engine on/off ·Cut off the engine power gradually and safely when in urgency ·GPRS(TCP/UDP), SMS ... digital output ports, 4 serial ports and 1 mini USB port GPS vehicle tracker, built-in RFID Reader with 2.4G RFID tag ...