... . RS3000B1 monitors various vehicle sensors, and provides customer with a vast variety of real-time activities and information ... , power/input/output cable, Mic, speaker, buzzer, siren, camera, handset/LCD monitor, fuel level/temperature sensor, fix bar, ... and RS232 connected device Intelligent GPS car alarm system/gps tracking device/ car gps alarm tracker RS3000B1/C1,support TF card recording