... kind of intelligent GPS two way car security system/car alarm system/vehicle alarm system to support complete car realtime tracking, alarm and ... Button, 2xLow Level Voltage, 2xHigh Level, ACC, Engine, Door Open, Brake , 2x A/D (10bit digital,5V,12V,24V,30V ... theft alarm, Power discarding, GPS antenna short circuit, GPS antenna open circuit, GPS receiver failure, illegal ignition, illegal door-opening, ...