... kind of intelligent GPS two way car security system/car alarm system/vehicle alarm system to support complete car realtime tracking, alarm ... /OInputsEmergency Button, 2xLow Level Voltage, 2xHigh Level, ACC, Engine, Door Open, Brake , 2x A/D (10bit digital,5V,12V,24V,30V ... fix bar, and RS232 connected device Intelligent GPS car alarm system/gps tracking device/ car gps alarm tracker RS3000B1/C1,support ...