GPS car alarm system/gps tracking device,car gps alarm tracker 4 band GSM compatible with original lock system kind of sensor RS3000B1 is one kind of intelligent GPS two way car security system/car alarm system/vehicle alarm system to support complete car realtime tracking, alarm and fleet management. It integrates a GPS receiver, a GSM/GPRS modem and a bulit-in alarm system. RS3000B1 monitors ...