... security Digital,analog I/O port 2 RS232 TF card RS3000C1 is a multifunctional GSM/GPRS GPS car tracker,car alarm system ... Voltage Analog, 2xHigh Voltage Analog, ACC Status, Engine Status, Door Status, Brake Status, Remote controller signal, 2x A/D ... antenna open circuit, GPS receiver failure, illegal ignition, illegal door-opening, Voltage Analog Input, Low battery voltage alarm, emergency brake ...