... sensor RS3000B1 is one kind of intelligent GPS two way car security system/car alarm system/vehicle alarm system to support complete ... Battery, GSM/GPS antennas, power/input/output cable, Mic, speaker, buzzer, siren, camera, handset/LCD monitor, fuel level/temperature ... , and RS232 connected device Intelligent GPS car alarm system/gps tracking device/ car gps alarm tracker RS3000B1/C1,support TF ...